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EMT Class > CH 6 > Flashcards

CH 6 Flashcards

Vocab for CH 6

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1
Q

acetabulum

A

The depression on the lateral pelvis where its three component bons join, in which the femoral head fits snugly

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2
Q

ATP

A

adenosine triphosphate: The nucleotide involved in energy metabolism; used to store energy

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3
Q

adrenergic

A

Pertaining to nerves that release the neurotransmitter norepinephrine, or noradrenaline (e.g. adrenergic nerves, adrenergic response); also pertains to the receptors acted on by norepinephrine

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4
Q

Aerobic Metabolism

A

metabolism that can proceed only in the presence of oxygen

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5
Q

alpha-adrenergic receptors

A

Portions of the nervous system that, when stimulated, can cause constriction of blood vessels

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6
Q

alveoli

A

The air sacs of the lungs in which the exchange of oxygen and carbon dioxide takes place

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7
Q

anerobic metabolism

A

Metabolism that takes place int he absence of oxygen; the main byproduct is lactic acid

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8
Q

aorta

A

The main artery leaving the left side of the heart and carrying freshly oxygenated blood to the body

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9
Q

appendicular skeleton

A

The portion of the skeletal system that comprises the arms, legs, pelvis, and shoulder girdle

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10
Q

appendix

A

a small, tubular structure that is attached to the lower border of the cecum in the lower right quadrant of the abdomen

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11
Q

arterioles

A

The smallest branches of arteries leading to the vast network of capillaries

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12
Q

articular cartilage

A

a pearly layer of specialized cartilage covering the articular surfaces (contact surfaces on the ends) of bones in synovial joints

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13
Q

atrium

A

one of the two upper chambers of the heart

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14
Q

autonomic nervous system

A

The part of the nervous system that regulates functions such as digestion and sweating, that are not controlled voluntarily

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15
Q

axial skeleton

A

The part of the skeleton comprising the skull, vertebral column, and rib cage

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16
Q

axons

A

Extensions of a neuron that carry impulses away from the nerve cell body to the dendrites (receivers) of another neuron

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17
Q

Ball and socket joint

A

a joint that allows internal and external rotation, as well as bending

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18
Q

beta-adrenergic receptors

A

Portions of the nervous system that, when stimulated, can cause an increase in the force of contraction of the heart, an increased heart rate, and bronchial dilation

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19
Q

biceps

A

The large muscle that covers the front of the humerus

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20
Q

bile ducts

A

The ducts that convey bile between the liver and the intestine

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21
Q

Blood Pressure (BP)

A

the pressure that the blood exerts against the walls of the arteries as it passes through them

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22
Q

Brachial artery

A

The major vessel in the upper extremities that supplies blood to the arm

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23
Q

brain

A

the controlling organ of the body and center of consciousness; functions include perception, control of reactions to the environment, emotional responses, and judgment

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24
Q

brainstem

A

The area of the brain between the spinal cord and cerebrum, surrounded by the cerebellum; controls functions that are necessary for life, such as respiration

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25
Q

calcaneus

A

the heel bone

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26
Q

capillary vessels

A

the tiny blood vessels between the arterioles and venules that permit transfer of oxygen, carbon dioxide, nutrients, and waste between body tissues and the blood

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27
Q

cardiac muscle

A

the heart muscle

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28
Q

cardiac output (CO)

A

A measure of the volume of blood circulated by the heart in one minute, calculated by multiplying the stroke volume by the heart rate

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29
Q

carotid artery

A

The major artery that supplies blood to the head and brain

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30
Q

carpals

A

small bones that compose the wrist

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31
Q

cartilage

A

The smooth connective tissue that forms the support structure of the skeletal system and provides cushioning between bones; also forms the nasal septum and portions of the outer ear

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32
Q

cecum

A

the first part of the large intestine, into which the ileum opens

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33
Q

cellular metabolism

A

a set of chemical reactions that supplies the cells with energy. Includes both anaerobic and aerobic metabolism

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34
Q

central nervous system (CNS)

A

The brain and spinal cord

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35
Q

cerebellum

A

One of the three major subdivisions of the brain, sometimes called the little brain; coordinates the various activities of the brain, particularly fine body movements.

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36
Q

cerebrospinal fluid (CSF)

A

Fluid produced in the ventricles of the brain that flows in the subarachnoid space and bathes the meninges

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37
Q

cerebrum

A

The largest part of the three subdivisions of the brain; sometimes called the gray matter; made up of several lobes that control movement, hearing, balance, speech, visual perception, emotions, and personality

38
Q

cervical spine

A

The portion of the vertebral column consisting of the first seven neck vertebrae that line in the neck

39
Q

chordae tendineae

A

Thin bands of fibrous tissue that attach to the valves in the heart and prevent them from inverting

40
Q

chyme

A

The substance that leaves the stomach. It is a combination of all the eaten foods with added stomach acids

41
Q

circulatory system

A

The complex arrangement of connected tubes, including the arteries, arterioles, capillaries, venules, and veins, that moves blood, oxygen, nutrients, carbon dioxide, and cellular waste throughout the body

42
Q

clavicle

A

The collarbone; it is lateral to the sternum and anterior to the scapula

43
Q

coccyx

A

the last three or four vertebrae of the spine; the tailbone

44
Q

coronal (frontal) plane

A

an imaginary plane where the body is divided into front and back parts

45
Q

coxae

A

The hip bones (singular: coxa)

46
Q

cranium

A

The part of the skull that encloses the brain and is composed of eight bones

47
Q

cricoid cartilage

A

a firm ridge of cartilage that forms the lower part of the larynx

48
Q

cricothyroid membrane

A

A thin sheet of fascia that connects the thyroid and cricoid cartilages that make up the larynx

49
Q

dead space

A

any portion of the airway that does contain air and cannot participate in gas exchange, such as the trachea and bronchi

50
Q

dermis

A

The inner layer of the skin, containing hair follicles, sweat glands, nerve endings, and blood vessels

51
Q

diaphragm

A

a muscular dome that forms the undersurface of the thorax, separating the chest from the abdominal cavity. Contraction of this (and the chest wall muscles) brings air into the lungs. Relaxation allows air to be expelled from the lungs

52
Q

diastole

A

The relaxation, or period of relaxation, of the heart, especially of the ventricles

53
Q

diffusion

A

Movement of a gas from an area of higher concentration to an area of lower concentration

54
Q

digestion

A

The processing of food that nourishes the individual cells of the body

55
Q

dorsalis pedis artery

A

The artery on the anterior surface of the foot between the first and second metatarsals

56
Q

endocrine system

A

The complex message and control system that integrates many body functions, including the release of hormones

57
Q

enzymes

A

substances designed to speed up the rate of specific biochemical reactions

58
Q

epidermis

A

the outer layer of skin, which is made up of cells that are sealed together to form a watertight protective covering for the body

59
Q

epiglottis

A

A thin, leaf-shaped valve that allows air to pass into the trachea but prevents food and liquid from entering

60
Q

epinephrine

A

(commonly called adrenaline) A substance produced by the body, and a drug produced in pharmaceutical companies, that increases pulse rate and blood pressure; the drug of choice for an anaphylactic reaction

61
Q

esophagus

A

A collapsible tube that extends from the pharynx to the stomach; muscle contractions propel food and liquids through it to the stomach

62
Q

expiratory reserve volume

A

The amount of air that can be exhaled following a normal exhalation; average volume is about 1,200 mL in the average adult man

63
Q

extension

A

The straightening of a joint

64
Q

fallopian tubes

A

The tubes that connect each ovary with the uterus and art he primary location for fertilization of the ovum

65
Q

femoral artery

A

The major artery in the thigh, a continuation of the external iliac artery. It supplies blood to the lower abdominal wall, external genitalia, and legs. It can be palpated in the groin area.

66
Q

femoral head

A

The proximal end of the femur, articulating with the acetabulum to form the hip joint.

67
Q

femur

A

The thighbone; the longest and one of the strongest bones in the body

68
Q

fibula

A

the smaller of the two bones that form the lower leg, located on the lateral side

69
Q

flexion

A

The bending of a joint

70
Q

foramen magnum

A

A large opening at the base of the skull through which the brain connects to the spinal cord

71
Q

frontal bones

A

The bones of the cranium that form the forehead

72
Q

gallbladder

A

A sac on the undersurface of the liver that collects bile from the liver and discharges it into the duodenum through the common bile duct

73
Q

genital system

A

the reproductive system in men and women

74
Q

germinal layer

A

the deepest layer of the epidermis where new skin cells are formed

75
Q

greater trochanter

A

bony prominence on the proximal lateral side of the thigh, just below the hip joint

76
Q

hair follicles

A

the small organs that produce hair

77
Q

heart

A

a hollow muscular organ that pumps blood throughout the body

78
Q

heart rate (HR)

A

The number of heartbeats during a specific time (usually 1 minute)

79
Q

hemoglobin

A

An oxygen-carrying protein found in red blood cells

80
Q

hinge joints

A

joints that can bend and straighten but cannot rotate; they restrict motion to one plane

81
Q

hormones

A

substances formed in specialized organs or glands and carried to another organ or group of cells in the same organism; they regulate many body functions, including metabolism, growth, and body temperature

82
Q

humerus

A

The supporting bone of the upper arm

83
Q

hydrostatic pressure

A

The pressure of water against the walls of its container

84
Q

hypercapnia

A

an abnormally high level of carbon dioxide in the bloodstream; also called hypercarbia

85
Q

hypoperfusion

A

a condition in which the circulatory system fails to provide sufficient circulation to maintain normal cellular function; also called shock

86
Q

hypoxia

A

Deficient oxygen concentration in the tissues

87
Q

hypoxic drive

A

a “backup system” to control respiration; senses drops in the oxygen level in the blood

88
Q

ilium

A

one of the three bones that fuse to form the pelvic ring

89
Q

inferior vena cava

A

one of the two largest veins in the body; carries blood from the lower extremities and the pelvis and the abdominal organs to the heart

90
Q

inspiratory reserve volume

A

The amount of air that can be inhaled after a normal inhalation; the amount of air that can be inhaled in addition to the normal tidal volume

91
Q

interstitial space

A

the space in between the cells

92
Q
A

EMT Class (12 decks)

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