PetMD "A" Flashcards

1
Q

Abacterial

A

Indicates that something has no presence of bacteria in it.

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2
Q

Abbattoir

A

A location in which animals are slaughtered; a slaughter house.

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3
Q

Abaxial

A

A term that refers to something in particular being found away from the center of the body or the body part in question.

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4
Q

Abdomen

A

The part of the body between the chest and the hips. It contains vital organs, including the stomach and intestines, bladder, liver, and other vital organs.

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5
Q

Abdominal Breathing

A

An irregular type of breathing that uses the muscles in the wall of the abdomen to move air into the lungs and pump it back out.

Abdominal breathing is not normal and is the indicator of a respiratory condition of infection.

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6
Q

Abdominal Cavity

A

The space in the abdomen that holds the major digestive organs in an animal.

Referred to as the area between the diaphragm and pelvis.

Referred to as the peritoneal cavity.

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7
Q

Abdomial Effusion

A

Refers to a condition in which fluid collects around the vital organs located inside the abdomen. This is normally the side effect of a more serious condition, like liver or heart disease. Certain bacterial infections can cause the build-up of such fluids, as can certain types of cancer. An animal experiencing abdominal effusion will likely have an extremely bloated midsection.

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8
Q

Abdominal Wall

A

A group of bones, muscles, and vital tissues that make up the wall around the organs in the adbomen. Inside these bones, muscles, and tissues is a cavity, and the cavity is what houses the vital organs found inside the abdomen. This wall is vital for protection of these organs.

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9
Q

Abdominocentesis

A

A procedure in which a needle is inserted into the abdomen of the animal to remove fluid.

Used to make a diagnosis.

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10
Q

Abduct

A

The movement of something away from the animal’s midsection.

Opposite of adduct.

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11
Q

Abiotrophy

A

The loss of use of an organ.

This is a progressive condition and is inheritable.

May occur in an organ, tissue, or nervous system.

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12
Q

Ablactate

A

To take off the tear or to stop from nursing; to wean an animal off its mother’s milk.

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13
Q

Ablate

A

To take something out of something else.

Ablation- removal of a body part by cutting it out.

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14
Q

Abomasopexy

A

The surgical procedure of attaching the fourth stomach compartment to the abdominal wall.

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15
Q

Abomasum

A

The fourth stomach of several stomach compartments- the true or real stomach.

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16
Q

Aboral

A

Used to describe a direction; away from or outside an animal’s mouth.

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17
Q

Abort

A

To end a pregnancy early, whether purposeful or accidental.

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18
Q

Abortive

A

Used to describe an animal that is barren or unable to successfully reproduce.

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19
Q

Abrasion

A

An injury that has occurred in which one or more of the topmost layers or skin are scraped away.

Known as a scrape.

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20
Q

Abscess

A

A localized infection; usually a lesion filled with pus.

Can be large or small.

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21
Q

Absoulte Age

A

Refers to an animals actual age in calendar years rather that the age pertaining to their development.

Ex: actual age vs age in dog years

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22
Q

Absorption

A

The joining of already digested nutrients within the circulatory system. Absorption is how an animal’s body makes use to nutrients from food.

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23
Q

Absorption Rate

A

The rate at which digested nutrients enters the circulatory system.

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24
Q

Abundance

A

The number of animals per unit of area

Ex: 5 horses per square acre

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25
Q

Acariasis

A

Refers to the condition of being overrun with parasites, such as ticks or mites.

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26
Q

Acaricide

A

Any substance known to kill certain parasites, including ticks and mites. May be found in the form of a paste, liquid, or powder.

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27
Q

Acarid

A

Refers to any tick or mite belonging to the order Acarina.

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28
Q

Acarine

A

A mite or tick.

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29
Q

Acclimate

A

To beome accustomed to new actions, surroundings, environment, or companions.

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30
Q

Accommodation

A

A process, that of adjusting the eye to see objects at a variety of distances.

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31
Q

Acclimatization

A

The act of helping an animal to adjust to something or some place foreign to them.

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32
Q

Accredited Herd

A

A term that is used to refer to dairy cattle that has been tested and received the certification necessary to be declared free of tuberculosis as described by the USDA. To be considered part of the accredited herd, two tests given must be passed.

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33
Q

Accuracy of Selection

A

Refers to the difference between what an animal’s bredding value was estimated to be and its actual breeding value.

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34
Q

Acetabulum

A

The socket that holds the head of the femur, found in the pelvis of a given animal.

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35
Q

Acetic Acid

A

Used in the fermentaion of lactic acid.

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36
Q

Acetic Bacteria

A

The bacteria that is involved with turing alcohol into acetic acid.

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37
Q

Acetic Fermentation

A

The process of turing ethyl alcohol into actetic acid with the use of fermenting bacteria.

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38
Q

Acetone

A

Created from the fermentaion of surgar and starch. It can be found in the urine of a diabetic animal, the breath of certain lactating animals, and in blood. When found in lactating animals, acetone indicates a deficiency, usually of carbohydrates resulting from an inability to properly oxidize fat in feed.

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39
Q

Acetonemia

A

A disease that involves the presence of large amounts of acetone in the blood. This condition is also referred to as: milk fever, acidosis, acetenouria, pregnancy diseases (in ewes).

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40
Q

Achalasia

A

Refers to difficulty or lack of ability to release the smooth muscle in the digestive system, found in the gastrointestinal tract.

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41
Q

Achondroplasia

A

Refers to the changes undergone by the skeletal system during development of the fetus; has the ability to be inherited genetically.

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42
Q

Acidophilus

A

A term used to describe an organism that tends to thrive in an acidic environment, such as soil rich in acid.

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43
Q

Acidosis

A

A condition of the body in which pH levels are abnormally low.

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44
Q

Acquired Character

A

The changes that the character of a particular animal has gone through, whether it be physiological or otherwise. May be due to the environment they live it. Not genetic.

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45
Q

Acquired Immunity

A

Refers to the immunity that can be built up to a disease or illness that an animal would normally fall victim to.

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46
Q

Acre per Animal Unit Month

A

A measurement used to figure the number or acres that are needed for one animal to be able to forage easily for one month when sed properly.

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47
Q

Acromegaly

A

An issue caused by excessive growth hormones in which the extremeties become larger in size.

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48
Q

Acromion

A

The outer edge of the scapula; this is where the collar bone is attached to the animal’s body.

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49
Q

Acrosome

A

The small cap that covers the head of sperm.

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50
Q

Active Agent

A

The ingredient in a chemical that poses a toxic threat to a particular animal.

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51
Q

Active Immunity

A

Immunity that is built up through exposure to the disease or pathogen.

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52
Q

Actual Analysis

A

The compiling of materials using a chemical analysis generated in a lab than a generalized analysis.

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53
Q

Actual Use

A

The amount of area used by certain animals.

Ex: livestock or hunting game’ expressed in animal units or animal unit months

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54
Q

Acuity

A

The quality of an animal’s vision.

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55
Q

Acute

A

Term used to imply that a situation or condition is more severe than usual; also used to refer to a disease having run short course or come on suddenly.

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56
Q

Acute Renal Failure (ARF)

A

The failure or loss of the kidneys.

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57
Q

Acute Toxicity

A

The potential that something, usually a medicine or substance, has to injure or cause illness in an animal when given as one dose or as multiple doses in the span of one day or less than one day.

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58
Q

Ad Lib

A

As much as needed or wanted.

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59
Q

Ad Lib Feeding

A

Term used to refer to a type of feeding in which there are no restrcitions placed on the amount of food to be given at any time.

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60
Q

Ad Libitum

A

The amount of feed ingested when made completely available without limitation or restriction.

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61
Q

Adaptability

A

The potential that an animal or organism has to change their bodies or lifestyles to suit their surroundings or environment.

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62
Q

Adaptation

A

Refers to the activities or processes than an animal goes through to make changes necessary for it to survive in its current environment.

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63
Q

Additives

A

Items or ingredients added to feed as part of the manufacturing process- may be used as a preservative, Also work to increase nutritional value, taste. There are legalities surrounding the amounts and types of additives allowed in feed.

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64
Q

Adduction

A

To move inward or toward the midsection of the animal.

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65
Q

Adenocarcinoma

A

The result of a malignant growth of the tissue of the epithelial gland.

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66
Q

Adenohypophysis

A

The rearmost pituitary gland; the only area of the pituitary gland that is functional.

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67
Q

Adherence

A

A property in which one item has the ability to stick or adhere to another.

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68
Q

Adhesion

A

Fibers that bond items together that would normally be combined.

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69
Q

Adipocyte

A

A cell of fat.

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70
Q

Adipose

A

Refers to the quality of being fat or full of fat.

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71
Q

Adjust Weaning Weight (205-day weight)

A

The weight of a young animal at the time of weaning- the weight is adjusted to the standard for 205 days old as well as the age of the dam itself.

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72
Q

Adjusted Yearling Weight (365-day weight)

A

The weight of a yearling after adjustments for the age of the dam and adjusted to a standard 365 days old.

Change in the number of animals, seasons, classes, or types of animals.

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73
Q

Adnexa

A

The structures of any given organ.

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74
Q

Adrenal Cortex

A

The outermost part of the adrenal gland.

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75
Q

Adrenal Gland

A

The gland that produces the hormone adrenaline and others; helps regulate metabolism, electrolytes, sexual function; regualtes the way the body responds to injury, trama. Found near the kidney. Also referred to as the suprarenal gland.

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76
Q

Adrenal Medulla

A

The innermost part of the adrenal gland.

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77
Q

Adrenalectomy

A

The process of surgically extracting one or both of the adrenal glands.

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78
Q

Adrenaline

A

A hormone produced by the adrenal glands, also referred to as epinephrine. Its used in the body’s response to traumatic situations or emergencies.

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79
Q

Adrenopathy

A

Refers to a type of disease that affects any portion of the adrenal glands.

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80
Q

Adventitious Sounds

A

Sounds of the respiratory system.

Bronchi, rales

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81
Q

Aerobe

A

Certain types of bacteria or organisms that only have the ability to survive in an environment of free oxygen.

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82
Q

Aerogun

A

Refers to bacteria with the ability to produce certain types of gas.

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83
Q

Aerophobia

A

The act of swallowing air.

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84
Q

Afebrile

A

A state of illness in which the subject is free of fever.

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85
Q

Afferent

A

Carrying toward; nerves in the nervous system that carry certain impulses.

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86
Q

Aflatoxin

A

A substance created by a certain fungus, Aspergillus flavus, a carcinogen, known to contaminate corn, some nuts, and certain grains.

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87
Q

Afterbirth

A

Found attached to the fetus while en utero; expelled upon birth of the fetus. Term used to refer to the placenta.

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88
Q

Agalactia

A

A condition in which an animal fails to nurse after birth of the offspring due to lack of secretion of milk.

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89
Q

Agalctic Mare

A

A female horse that is not properly lactating to feed her foal.

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90
Q

Age Class

A

Term used to describe the grouping of animals by age.

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91
Q

Aged Horse

A

Term used to describe a horse over the age of eight years old; often used to refer to a horse over the age of 12.

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92
Q

Agglutination

A

A grouping together of certain cells, molecules, or particles into one area or clump.

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93
Q

Agglutinins

A

A) Anitibodies that are created as an animal’s natural response to an infection or the presence of strange micro organisms; these antibodies cause the organisms to clump together.

B) Any substance or anitbody that causes certain organisms to clump together; usually causes the clumping of the organism that caused it be produced in the first place.

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94
Q

Agonal Breathing

A

The breathing that occurs when an animal is near death of suffering from severe pain.

95
Q

Agonist

A

Any substance that causes effect by attaching itself to the right receptor.

96
Q

Agonistic

A

An animal whose behavior indicates offensive/defensive activities.

97
Q

Agoraphobia

A

Refers to animals who are kept stabled or in stalls for an extended period of time.

A fear of wide open spaces.

98
Q

Agostadero

A

Term used mostly in the southwestern United States; refers to a pasture that is used only during the summer months.

99
Q

Agouti

A

A type of coat pattern in which the fur is darker toward the root and becomes gradually lighter near the tip.

100
Q

Agranulocyte

A

Any cell that does not have the normal granular structures in the cytoplasm.

101
Q

Agrarian

A

Anything pertaining to or relating to the agriculture industry.

102
Q

Agriculture

A

A broad term used to indicate the industry involved with producing animals and plants for use by humans.

103
Q

Air Sacs

A

An avian term; refers to pockets in the respiratory system of birds that hold air and allow them the ability to fly and the buoyancy necessary to do so.

104
Q

Albidus

A

Indicates something being white in color.

105
Q

Albino

A

An animal who lacks normal coloring; lack of melanin. Pure white coat and pink or red eyes.

106
Q

Albumin

A

A type of protein that can be dissolved in water; found in milk, egg white, certain muscle, blood, and some urine.

107
Q

Albuminaria

A

A condition in which albumin is found in urine.

108
Q

Alcohol

A

The term used to refer to a family of organic chemical compounds that consist of carbon, hydrogen, and oxygen in any form.

109
Q

Alcohol Test

A

A test performed in which milk and ethyl alcohol are combined to detect milk with abnormal properties. While normal milk should not cling to the tube, abnomal milk clings to the glass.

110
Q

Alcohol-Alizarin Test

A

A test performed in which alcohol and alizarin are combined with milk. If the solution turns reddish, that indicates the presence of normal milk. Yellowish or brown- rotten milk. Puple- presence of mastitis.

111
Q

Aleukia

A

A condition in which leukocytes (white blood cells) are not found in the blood of an animal.

112
Q

Alfalfa

A

A vital source of fiber and protein, often eaten by horses.

113
Q

Alimentary Tract

A

Term refers to the system in the body that deals with the processing of food and nutrients in between the mouth and the anus; may also be referred to as the GI tract, the intestinal tract, or the gastrointestinal tract.

114
Q

Alkaline

A

A property of having a high pH or low amount of hydogen ions.

115
Q

Allantois

A

The layer of placenta closest to the inside.

116
Q

Allergen

A

Any substance with the potential to produce allergic reaction in an animal prone to such a reaction.

117
Q

Allergy

A

A condition in which the body reacts to a particular item or product; may also be referred to as hypersensitivity.

118
Q

Allogamy

A

The process of cross-fertilization.

119
Q

Allopolyploid

A

Term used to refer to a polyploidy that contains chromosomes that are different from one another, as in from more than two species.

120
Q

Allosomes

A

Term used to refer to a type of chromosome that is different in one reason or another, either by a discrepancy in behavior, shape, or size.

121
Q

Allotment

A

In the agricultural industry, term used to refer to an area that is designated for use by a certain number of cows or sheep or for use by both types of animals.

122
Q

Alopecia

A

A condition of hair loss resulting in either complete baldness or patches of baldness.

123
Q

Alter

A

To change by neutering or spaying. May also be referred to as cutting, gelding, or emasculating.

124
Q

Alteration of Generations

A

A theory of reproduction in which certain characteristics are only found in every other generation.

125
Q

Alternate Grazing

A

The process of rotating pastures in a manner which allows the forage to grow back before it is grazed once more. May also be referred to as rotational grazing.

126
Q

Alternate Host

A

An organism in which a parasite or organism inhabits for only a certain part of its life cycle.

127
Q

Amasesis

A

A term used to refer to an animal without the ability to chew.

128
Q

Ambidextrous

A

Refers to a living thing that can use both hands equally well, as in not solely considered to be right-handed or left-handed.

129
Q

Ambient

A

Around or surrounding.

130
Q

Amble

A

A type of gait that is slower or broken up in cadence; usually lateral.

131
Q

Ambler

A

Term used to refer to a type of horse who paces; usually refers to sporting horses.

132
Q

Amblotic

A

Term used to refer to a substance, organism, or disease that has the potential to cause abortion in animals.

133
Q

Amblyopia

A

A condition in which loss of sight occurs without being attributed to any particular disease or medical condition.

134
Q

Amino Acids

A

Organic substances that aid in the creation of proteins; also the end product of the decomposition of certain proteins.

135
Q

Amitosis

A

A condition of the body that occurs when an excess amount of amino acids is taken in.

136
Q

Ammonia

A

A chemical compound made of nitrogen and hydrogen; NH3. Often added to feed to make it more nutritious for livestock; usually lacks color but has a strong odor.

137
Q

Amnesia

A

A condition in which loss of memory occurs.

138
Q

Amniocentesis

A

The process of obtaining abdominal fluid by puncturing the abdomen with a needle and going through the walls of the uterus to obtain it.

139
Q

Amnion

A

The membrane in the uterus that is closest to the fetus; also referred to as the amniotic sac.

140
Q

Amniotic Cavity

A

Term refers to the area in the uterus that surrounds the embryo.

141
Q

Amniotic Fluid

A

The fluid that nourishes the fetus; found in the amniotic sac.

142
Q

Amoeba

A

An organism with no shape or form; moves with the help of a false foot.

143
Q

Amotus

A

A term that refers to the hind toe in certain species of birds; the amotus is not one of the digits that touches the ground when the bird is standing.

144
Q

Amphibian

A

A term used to refer to an animal, usually a reptile, that starts out breathing with the help of gills and develops into an animal capable of breathing through lungs like a mammal.

145
Q

Amphigean

A

A term used to refer to an animal that exists in both the Old World and the New World.

146
Q

Amphoteric

A

The property of having the ability to react as an acid, base, or casein.

147
Q

Amylase

A

Term used to refer to a certain enzyme that the pancreas creates to help in the digestion of certain starches.

148
Q

Amylopsin

A

An enzyme created by the pancreas to break sugars down into starch.

149
Q

Anabiosis

A

The act of reviving a living thing after it has died or appeared to have died.

150
Q

Anabolism

A

Building up or building together; the building of cells in the body. The term opposite to catabolism.

151
Q

Anadipsia

A

A condition referring to excessive thirst.

152
Q

Anaerobe

A

Term used to refer to an organism that can live without the aid of free oxygen; usually refers to certain types of bacteria.

153
Q

Anaerobic

A

a) living in an environment lacking free oxygen b) pertaining to an organism with the ability to live in an environment lacking free oxygen.

154
Q

Aerobic Bacteria

A

Bacteria that does not require the presence of free oxygen to live, survive, and reproduce; may even be hindered by the presence of free oxygen in their environment.

155
Q

Anal Glands

A

Tissue located inside the anal sac that aids in the marking of territory in animals, for defense, or for sexual behavior.

156
Q

Anal Sacculitis

A

A condition inw which the pouches inside the anus become inflamed.

157
Q

Analgesia

A

Without the presence of pain.

158
Q

Analgesic

A

Any medication that is designed to aid in relieving pain without being a sedative.

159
Q

Analogous

A

In veterinary medicine, term used to refer to structures that are anatomically different but perform functions that are somewhat the same in nature.

160
Q

Anaphylaxis

A

Term used to refer to an animal’s response to a certain substance, usually foreign; may include swelling, airway blockage, etc; may also be referred to as anaphylactic shock.

161
Q

Anaplasia

A

Any change in the way that cells are arranged and structured in relation to one another.

162
Q

Anastomosis

A

A surgical procedure in which two hollow tubes or structures are surgically connected.

163
Q

Anatomic Position

A

Term used to refer to an animal in its regular standing position.

164
Q

Ancestor Merit

A

Used in agriculture; a term used to refer to the estimate of the female offspring of any given bill based on the bull’s sire and grandsire on its maternal side.

165
Q

Androgenesis

A

The theory of the development of any offspring that lacks maternal chromosomes.

166
Q

Androgynized Cow

A

Term used to refer to a cow that has undergone testosterone therapy; usually adorned with a bell-shaped marker.

167
Q

Anechoic

A

A term used to refer to an ultrasonic wave that is transmitted into tissue without it being reflected back.

168
Q

Anemia

A

A condition of the blood in which normal red blood cell counts or hemoglobin are lacking.

169
Q

Anestrous

A

The period in which an animal is not inclined to mate or breed; any time in which a female animal does not cycle.

170
Q

Aneurysm

A

The enlargement of an artery; usually shaped like a bubble or balloon.

171
Q

Angiocardogram

A

A study of the vessels and heart by way of radiograph; uses dyes and other contrasting materials.

172
Q

Angiogram

A

The study of blood vessels after dye has been injected into them to create a visual contrast.

173
Q

Angiopathy

A

A disease of the blood vessels.

174
Q

Angioplasty

A

The process of surgically fixing or repairing damaged blood vessels.

175
Q

Angiorrhaphy

A

The suturing of a blood vessel.

176
Q

Anhydrosis

A

Term used to refer to a state in an animal in which it cannot sweat.

177
Q

Anisocoria

A

A medical condition in which the pupils of both eyes are differently sized.

178
Q

Anisocytosis

A

A condition in which cells are unequal.

179
Q

Ankylosis

A

A condition in which a joint is unable to move, usually due to some type of illness or medical procedure.

180
Q

Anophthalmos

A

Lacking the development of one or two eyes.

181
Q

Anoplasty

A

A surgical procedure in which the anus is repaired.

182
Q

Anorectal

A

Term used to refer to the opening of the large intestine.

183
Q

Anoxia

A

Refers to the lack of oxygen.

184
Q

Antagonism

A

Term used to refer to what happens when chemical is exposed to another chemical.

185
Q

Antebrachium

A

The area of the front legs that is found between the elbow and the carpal joints.

186
Q

Antefebrile

A

Term used to refer to the time before a fever sets in.

187
Q

Anterior

A

In veterinary terms, used to refer to the front of the body.

188
Q

Anterior Chamber

A

Veterinary term used to indicate the space behind the cornea of the eye and in front of the iris; contains liquid.

189
Q

Anterior Pituitary

A

Term used to refer to the front of the pituitary gland; can be found at the bottom of the brain and is responsible for the secretion of certain hormones that deal with growth and other bodily functions.

190
Q

Anterior Presentation

A

Refers to the normal position of an animal during birth, with the feet and head set to come out first.

191
Q

Anthelmintic

A

Usually used in veterinary medicine to refer to certain drugs that are designed to combat intestinal worms in animals.

192
Q

Antiarrhythmic

A

Used to refer to any drug that alters irregularities in an animal’s heartbeat.

193
Q

Antibacterial

A

Used to refer to any drug or medical substance that has the ability to slow down or stop the growth of bacteria and other such organisms.

194
Q

Antibiosis

A

A relationship between two organisms in which one of the organisms causes harm to or kills the other.

195
Q

Antibiotic

A

Term used to refer to any substance that is used to slow down the growth of bacteria or stop it altogether.

196
Q

Antibody

A

A protein in the body that is designed to fight disease; antibodies are brought on by the presence of certain antigens in the system.

197
Q

Anticarcinogen

A

Refers to any substance that slows down or stops the activities of any substance known to be a carcinogen (known to cause cancer).

198
Q

Anticoagulant

A

Term used to refer to any drug that is used to slow down or stop the clotting of blood for medical purposes.

199
Q

Anticonvulsant

A

Term used to refer to any substance or drug that stops seizures.

200
Q

Antidiarrheal

A

Term used to refer to any drug or substance that is known to prevent bowel movements or stop diarrhea.

201
Q

Antidiuresis

A

A condition in which urine is produced and eliminated on a slower basis.

202
Q

Antidote

A

Any substance used to combat the effects of certain poisons.

203
Q

Antiemetic

A

Term used to refer to any drug or substance that is used to control vomiting.

204
Q

Antigen

A

Any substance or item that the body of an animal would regard as strange or unwanted; a foreign disease or virus in the body (toxin, etc.)

205
Q

Antihypertensive

A

Term used to refer to any drug that lowers an animal’s blood pressure.

206
Q

Antimutagen

A

Term used to refer to any substance that slows down or prevents the activity of a mutagen.

207
Q

Antineoplastic Agent

A

Term used to refer to a drug that is used to treat a neoplasm.

208
Q

Antioxidant

A

Term used to describe certain feeds; refers to c or anything else that contains compounds that prevent the process of oxidization.

209
Q

Antipruritic Agent

A

Any drug that is used to control itching and resultant inflammation.

210
Q

Antipyretic

A

Term used to describe a drug that is used to reduce a feverish temperature.

211
Q

Antisepsis

A

Preventing certain infections by destroying or excluding certain organisms that may be known to contribute to them.

212
Q

Antiseptic

A

Any drug that kills organisms in an animal’s tissue or prevents the growth of more.

213
Q

Antiserum

A

Any serum that is known to contain the antibodies that contain the antigen necessary to combat a certain disease; usually contains antibodies extracted from an animal that has been infected with the disease and built up an immunity.

214
Q

Antispasmodic

A

Any drug that is known to prevent spasms of any muscles in the body.

215
Q

Antitoxin

A

A type of antiserum that contains antibodies against certain poisons.

216
Q

Antitussive

A

A medication designed to reduce or eliminate a cough.

217
Q

Antrum

A

The empty space inside any hollow organ or bodily structure.

218
Q

Anuria

A

The lack of production of urine in an animal’s body.

219
Q

Aorta

A

The name of the main artery that starts in the left ventricle of an animal’s four chamber heart.

220
Q

Aortic Semilunar Valve

A

The fold of membranes between the left ventricle and the aorta.

221
Q

Aperture

A

Any type of opening

222
Q

Apex

A

The very tip or peak of something

223
Q

Aphakia

A

The absence of a lens, as in an eye.

224
Q

Aphtha

A

A small sac inside the udder, between the toes, or inside the mouth of certain animals; may have to do with a foot-and-mouth disease or affliction.

225
Q

Apia Matter

A

The third layer of the meninges

226
Q

Aplasia

A

When a certain organ or vital tissue fails to properly or fully develop.

227
Q

Apnea

A

Failure to breathe properly, as in while sleeping; lack of breathing.

228
Q

Aqueous Humor

A

Term used to refer to the liquid that gives nourishment to the structures inside the rear segment of an animal’s eye.

229
Q

Archetype

A

A biological term that refers to plants or animals from which certain qualities have been inherited.

230
Q

Arrector Pilus

A

The muscle that is attached to the hair follicle that causes the hair to stand up straight; the plural form of this word is arrector pili.

231
Q

Arteriectomy

A

The removal of part of an artery by surgical procedure.

232
Q

Arterioles

A

The smaller veins or arteries that extend out from larger arteries.

233
Q

Arterioplasty

A

A surgical procedure in which damage to an artery is rectified or an artery is repaired.

234
Q

Arteriosclerosis

A

A medical condition in which arteries become thicker and harder in texture.