Chapter 5 Flashcards
0
Q
abduction
A
Motion of a limb away from the midline.
1
Q
abdomen
A
The body cavity that contains the major organs of digestion and excretion. It is located below the diaphragm and above the pelvis.
2
Q
acetabulum
A
The depression on the lateral pelvis where its three component bones join, in which the femoral head fits snugly.
3
Q
Adam’s apple
A
The firm prominence in the upper part of the larynx formed by the thyroid cartilage. It is more prominent in men than in women.
4
Q
adduction
A
Motion of a limb toward the midline.
5
Q
adenosine triphosphate (ATP)
A
The nucleotide involved in energy metabolism; used to store energy.
6
Q
adrenal glands
A
Endocrine glands located on top of the kidneys that release adrenaline when stimulated by the sympathetic nervous system.
7
Q
adrenergic
A
Pertaining to nerves that release the neurotransmitter norepinephrine, or noradrenaline (such as adrenergic nerves, adrenergic response). The term also pertains to the receptors acted on by norepinephrine, that is, the adrenergic receptors.
8
Q
aerobic metabolism
A
Metabolism that can proceed only in the presence of oxygen.
9
Q
agonal gasps
A
Slow, gasping breaths, sometimes seen in dying patients.
10
Q
alpha-adrenergic receptors
A
Portions of the nervous system that when stimulated can cause constriction of blood vessels.
11
Q
alveoli
A
The air sacs of the lungs in which the exchange of oxygen and carbon dioxide takes place.
12
Q
anaerobic metabolism
A
The metabolism that takes place in the absence of oxygen; the principal product is lactic acid.
13
Q
anatomic position
A
The position of reference in which the patient stands facing you, arms at the side, with the palms of the hands forward.
14
Q
anterior
A
The front surface of the body; the side facing you in the standard anatomic position.
15
Q
aorta
A
The principal artery leaving the left side of the heart and carrying freshly oxygenated blood to the body.
16
Q
apex (plural apices)
A
The pointed extremity of a conical structure.
17
Q
apneustic center
A
Portion of the pons that increases the length of inspiration and decreases the respiratory rate.
18
Q
appendicular skeleton
A
The portion of the skeletal system that comprises the arms, legs, pelvis, and shoulder girdle.
19
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.
20
Q
arterioles
A
The smallest branches of arteries leading to the vast network of capillaries.
21
Q
atrium
A
One of the two upper chambers of the heart.
22
Q
autonomic nervous system
A
The part of the nervous system that regulates functions, such as digestion and sweating, that are not controlled voluntarily.
23
Q
axial skeleton
A
The part of the skeleton comprising the skull, spinal column, and rib cage.
24
ball-and-socket joint
A joint that allows internal and external rotation, as well as bending.
25
beta-adrenergic receptors
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.
26
biceps
The large muscle that covers the front of the humerus.
27
bilateral
In anatomy, a body part that appears on both sides of the midline.
28
bile ducts
The ducts that convey bile between the liver and the intestine.
29
blood pressure (BP)
The pressure that the blood exerts against the walls of the arteries as it passes through them.
30
brachial artery
The major vessel in the upper extremity that supplies blood to the arm.
31
brain
The controlling organ of the body and center of consciousness; functions include perception, control of reactions to the environment, emotional responses, and judgment.
32
brain stem
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.
33
capillary vessels
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.
34
cardiac muscle
The heart muscle.
35
carotid artery
The major artery that supplies blood to the head and brain.
36
cartilage
The support structure of the skeletal system that provides cushioning between bones; also forms the nasal septum and portions of the outer ear.
37
cecum
The first part of the large intestine, into which the ileum opens.
38
central nervous system (CNS)
The brain and spinal cord.
39
cerebellum
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.
40
cerebrospinal fluid (CSF)
Fluid produced in the ventricles of the brain that flows in the subarachnoid space and bathes the meninges.
41
cerebrum
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.
42
cervical spine
The portion of the spinal column consisting of the first seven vertebrae that lie in the neck.
43
chordae tendineae
Thin bands of fibrous tissue that attach to the valves in the heart and prevent them from inverting.
44
chyme
The name of the substance that leaves the stomach. It is a combination of all of the eaten foods with added stomach acids.
45
circulatory system
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.
46
clavicle
The collarbone; it is lateral to the sternum and anterior to the scapula.
47
coccyx
The last three or four vertebrae of the spine; the tailbone.
48
coronal plane
An imaginary plane where the body is cut into front and back parts.
49
cranium
The area of the head above the ears and eyes; the skull. The cranium contains the brain.
50
cricoid cartilage
A firm ridge of cartilage that forms the lower part of the larynx.
51
cricothyroid membrane
A thin sheet of fascia that connects the thyroid and cricoid cartilages that make up the larynx.
52
dead space
Any portion of the airway that does contain air and cannot participate in gas exchange, such as the trachea and bronchi.
53
deep
Further inside the body and away from the skin.
54
dermis
The inner layer of the skin, containing hair follicles, sweat glands, nerve endings, and blood vessels.
55
diaphragm
A muscular dome that forms the undersurface of the thorax, separating the chest from the abdominal cavity. Contraction of the diaphragm (and the chest wall muscles) brings air into the lungs. Relaxation allow air to be expelled from the lungs.
56
diastole
The relaxation, or period of relaxation, of the heart, especially of the ventricles.
57
diffusion
Movement of a gas from an area of higher concentration to an area of lower concentration.
58
digestion
The processing of food that nourishes the individual cells of the body.
59
distal
Farther from the trunk or nearer to the free end of the extremity.
60
dorsal
The posterior surface of the body, including the back of the hand.
61
dorsalis pedis artery
The artery on the anterior surface of the foot between the first and second metatarsal.
62
dorsal respiratory group (DRG)
A portion of the medulla oblongata where the primary respiratory pacemaker is found.
63
endocrine system
The complex message and control system that integrates many body functions, including the release of hormones.
64
enzymes
Substances catalysts designed to speed up the rate of specific biochemical reactions.
65
epidermis
The outer layer of skin, which is made up of cells that are sealed together to form a watertight protective covering for the body.
66
epiglottis
A thin, leaf-shaped valve that allows air to pass into the trachea but prevents food and liquid from entering.
67
epinephrine
A hormone produced by the adrenal medulla that has a vital role in the function of the sympathetic nervous system.
68
esophagus
A collapsible tube that extends from the pharynx to the stomach; contractions of the muscle in the wall of the esophagus propel food and liquids through it to the stomach.
69
expiratory reserve volume
The amount of air that can be exhaled following a normal exhalation; average volume is about 1200 mL.
70
extend
To straighten.
71
extension
The straightening of a joint.
72
fallopian tubes
Long, slender tubes that extend from the uterus to the region of the ovary on the same side and through which the ovum passes from the ovary to the uterus.
73
femoral artery
The principal artery of 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.
74
femoral head
The proximal end of the femur, articulating with the acetabulum to form the hip joint.
75
femur
The thighbone; the longest and one of the strongest bones in the body.
76
flex
To bend.
77
flexion
The bending of a joint.
78
foramen magnum
A large opening at the base of the skull through which the brain connects to the spinal cord.
79
gallbladder
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.
80
genital system
The reproductive system in males and females.
81
germinal layer
The deepest layer of the epidermis where new skin cells are formed.
82
greater trochanter
A bony prominence on the proximal lateral side of the thigh, just below the hip joint.
83
hair follicles
The small organs that produce hair.
84
heart
A hollow muscular organ that pumps blood through out the body.
85
heart rate
The number of heartbeats during a specific time.
86
Hering-Breuer reflex
A protective mechanism that terminates inhalation, thus preventing overexpansion of the lungs.
87
hinge joints
Joints that can bend and straighten but cannot rotate; they restrict motion to one plane.
88
hormones
Substances formed in specialized organs or glands and carried to another organ or group of cells in the same organism. Hormones regulate many body functions, including metabolism, growth, and body temperature.
89
humerus
The supporting bone of the upper arm.
90
hydrostatic pressure
The pressure of water against the walls of its container.
91
hypoxic drive
A "backup system" to control respiration; senses drops in the oxygen level in the blood.
92
ilium
One of three bones that fuse to form the pelvic ring.
93
inferior
Below a body part or nearer to the feet.
94
inferior vena cava
One of the two largest veins in the body; carries blood from the lower extremities and the pelvic and the abdominal organs to the heart.
95
inspiratory reserve volume
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.
96
interstitial space
The space in between the cells.
97
involuntary muscle
The muscle over which a person has no conscious control. It is found in many automatic regulating systems of the body.
98
ischium
One of three bones that fuse to form the pelvic ring.
99
joint (articulation)
The place where two bones come into contact.
100
joint capsule
The fibrous sac that encloses a joint.
101
kidneys
Two retroperitoneal organs that excrete the end products of metabolism as urine and regulate the body's salt and water content.
102
labored breathing
The use of muscles of the chest, back, and abdomen to assist in expanding the chest; occurs when air movement is impaired.
103
lactic acid
A metabolic end product of the breakdown of glucose that accumulates when metabolism proceeds in the absence of oxygen.
104
large intestine
The portion of the digestive tube that encircles the abdomen around the small bowel, consisting of the cecum, the colon, and the rectum. It helps regulate water balance and eliminate solid waste.
105
lateral
In anatomy, parts of the body that lie farther from the midline. Also called outer structures.
106
lesser trochanter
The projection on the medial/superior portion of the femur.
107
ligament
A band of fibrous tissue that connects bones to bones. It supports and strengthens a joint.
216
liver
A large solid organ that lies in the right upper quadrant immediately below the diaphragm; it produces bile, stores glucose for immediate use by the body, and produces many substances that help regulate immune responses.
217
lumbar spine
The lower part of the back, formed by the lowest five nonfused vertebrae; also called the dorsal spine.
218
mandible
The bone of the lower jaw.
219
manubrium
The upper quarter of the sternum.
220
maxillae
The upper jawbones that assist in the formation of the orbit, the nasal cavity, and the palate and hold the upper teeth.
221
medial
Parts of the body that lie closer to the midline; also called inner structures.
222
medulla oblongata
Nerve tissue that is continuous inferiorly with the spinal cord; serves as a conduction pathway for ascending and descending nerve tracts; coordinates heart rate, blood vessel diameter, breathing, swallowing, vomiting, coughing, and sneezing.
223
midbrain
The part of the brain that is responsible for helping to regulate the level of consciousness.
224
midsagittal plane (midline)
An imaginary vertical line drawn from the middle of the forehead through the nose and the umbilicus (navel) to the floor.
225
minute volume
The amount of air that moves in and out of the lungs per minute minus the dead space. Also called minute ventilation.
226
motor nerves
Nerves that carry information from the central nervous system to the muscles of the body.
227
mucous membranes
The lining of body cavities and passages that communicate directly or indirectly with the environment outside the body.
228
mucus
The opaque, sticky secretion of the mucous membranes that lubricates the body openings.
229
musculoskeletal system
The bones and voluntary muscles of the body.
230
myocardium
The heart muscle.
231
nasopharynx
The part of the pharynx that lies above the level of the roof of the mouth, or palate.
232
nervous system
The system that controls virtually all activities of the body, both voluntary and involuntary.
233
norepinephrine
A neurotransmitter and drug sometimes used in the treatment of shock; produces vasoconstriction through its alpha-stimulator properties.
234
occiput
The most posterior portion of the cranium.
235
oncotic pressure
The pressure of water to move, typically into the capillary, as the result of the presence of plasma proteins.
236
orbit
The eye socket, made up of the maxilla and zygoma.
237
oropharynx
A tubular structure that extends vertically from the back of the mouth to the esophagus and trachea.
238
ovaries
Female glands that produces sex hormones and ova (eggs).
239
palmar
The forward facing part of the hand in the anatomic position.
240
pancreas
A flat, solid organ that lies below the liver and the stomach; it is a major source of digestive enzymes and produces the hormone insulin.
241
parasympathetic nervous system
A subdivision of the autonomic nervous system, involved in control of involuntary, vegetative functions, mediated largely by the vagus nerve through the chemical acetylcholine.
242
parietal regions
The areas between the temporal and occipital regions of the cranium.
243
patella
The kneecap; a specialized bone that lies within the tendon of the quadriceps muscle.
244
pathophysiology
The study of how normal physiologic processes are affected by disease.
245
perfusion
The circulation of oxygenated blood within an organ or tissue in adequate amounts to meet the cells' current needs.
246
peripheral nervous system
The part of the nervous system that consists of 31 pairs of spinal nerves and 12 pairs of cranial nerves. These peripheral nerves may be sensory nerves, motor nerves, or connecting nerves.
247
peristalsis
The wavelike contraction of smooth muscle by which the ureters or other tubular organs propel their contents.
248
plantar
The bottom surface of the foot.
249
plasma
A sticky, yellow fluid that carries the blood cells and nutrients and transports cellular waste material to the organs of excretion.
250
platelets
Tiny, disk-shaped elements that are much smaller than the cells; they are essential in the initial formation of a blood clot, the mechanism that stops bleeding.
251
pleura
The serous membranes covering the lungs and lining the thoracic cavity, completely enclosing a potential space know as the pleural space.
252
pleural space
The potential space between the parietal pleura and the visceral pleura. It is described as "potential" because under normal conditions, the space does not exist.
253
pneumotaxic (pontine) center
A portion of the pons that assists in creating shorter, faster respirations.
254
pons
An organ that lies below the midbrain and above the medulla and contains numerous important nerve fibers, including those for sleep, respiration, and the medullary respiratory center.
255
posterior
In anatomy, the back surface of the body; the side away from you in the standard anatomic position.
256
posterior tibial artery
The artery just behind the medial malleolus; supplies blood to the foot.
257
prostate gland
A small gland that surrounds the male urethra where it emerges from the urinary bladder; it secretes a fluid that is part of the ejaculatory fluid.
258
proximal
Closer to the trunk.
259
pubic symphysis
A hard bony and cartilaginous prominence found at the midline in the lowermost portion of the abdomen where the two halves of the pelvic ring are joined by cartilage at a joint with minimal motion.
260
pubis
One of three bones that fuse to form the pelvic ring.
261
pulmonary artery
The major artery leading from the right ventricle of the heart to the lungs; it carries oxygen-poor blood.
262
pulmonary circulation
The flow of blood from the right ventricle through the pulmonary arteries and all of their branches and capillaries in the lungs and back to the left atrium through the venules and pulmonary veins; also called the lesser circulation.
263
pulmonary veins
The four veins that return oxygenated blood from the lungs to the left atrium of the heart.
264
pulse
The wave of pressure created as the heart contracts and forces blood out the left ventricle and into the major arteries.
265
quadrants
The way to describe the sections of the abdominal cavity. Imagine two lines intersecting at the umbilicus dividing the abdomen into four equal areas.
266
radial artery
The major artery in the forearm; it is palpable at the wrist on the thumb side.
267
radius
The bone on the thumb side of the forearm.
268
rectum
The lowermost end of the colon.
269
red blood cells
Cells that carry oxygen to the body's tissues; also called erythrocytes.
270
renal pelvis
A cone-shaped collecting area that connects the ureter and the kidney.
271
residual volume
The air that remains in the lungs after maximal expiration.
272
respiration
The inhaling and exhaling of air; the physiologic process that exchanges carbon dioxide from fresh air.
273
respiratory system
All the structures of the body that contribute to the process of breathing, consisting of the upper and lower airways and their component parts.
274
reticular activating system
Located in the upper brain stem; responsible for maintenance of consciousness, specifically one's level of arousal.
275
retroperitoneal
Behind the abdominal cavity.
276
sacroiliac joint
The connection point between the pelvis and the vertebral column.
277
sacrum
One of three bones (sacrum and two pelvic bones) that make up the pelvic ring; consists of five fused sacral vertebrae.
278
sagittal (lateral) plane
An imaginary line where the body is cut into left and right parts.
279
salivary glands
The glands that produce saliva to keep the mouth and pharynx moist.
280
scalp
The thick skin covering the cranium, which usually bears hair.
281
scapula
The shoulder blade.
282
sebacious glands
Glands that produce an oily substance called sebum, which discharges along the shafts of the hairs.
283
semen
Seminal fluid ejaculated from the penis and containing sperm.
284
seminal vesicles
Storage sacs for sperm and seminal fluid, which empty into the urethra at the prostate.
285
sensory nerves
The nerves that carry sensations of touch, taste, heat, cold, pain, and other modalities from the body to the central nervous system.
286
shock
An abnormal state associated with inadequate oxygen and nutrient delivery to the metabolic apparatus of the cell.
287
shoulder girdle
The proximal portion of the upper extremity, made up of the clavicle, the scapula, and the humerus.
288
skeletal muscle
Muscle that is attached to bones and usually crosses at least one joint; striated, or voluntary, muscle.
289
skeleton
The framework that gives the body its recognizable form; also designed to allow motion of the body and protection of vital organs.
290
small intestine
The portion of the digestive tube between the stomach and the cecum, consisting of the duodenum, jejunum, and ileum.
291
smooth muscle
Involuntary muscle; it constitutes the bulk of the gastrointestinal tract and is present in nearly every organ to regulate automatic activity.
292
somatic nervous system
The part of the nervous system that regulates activities over which there is voluntary control.
293
sphincters
Muscles arranged in circles that are able to decrease the diameter of tubes. Example are found within the rectum, bladder, and blood vessels.
294
sphygmomanometer
A device used to measure blood pressure.
295
spinal cord
An extension of the brain, composed of virtually all the nerves carrying messages between the brain and the rest of the body. It lies inside of and is protected by the spinal canal.
296
sternum
The breastbone.
297
stratum corneal layer
The outermost or dead layer of the skin.
298
stroke volume (SV)
The volume of blood pumped forward with each ventricular contraction.
299
subcutaneous tissue
Tissue, largely fat, that lies directly under the dermis and serves as an insulator of the body.
300
superficial
Closer to or on the skin.
301
superior
Above a body part or nearer to the head.
302
superior vena cava
One of the two largest veins in the body; carries blood from the upper extremities, head, neck, and chest into the heart.
303
sweat glands
The glands that secrete sweat, located in the dermal layer of the skin.
304
symphysis
A type of joint that has grown together forming a very stable connection.
305
synovial fluid
The small amount of liquid within a joint used as lubrication.
306
synovial membrane
The lining of a joint that secretes synovial fluid into the joint space.
307
systemic circulation
The portion of the circulatory system outside of the heart and lungs.
308
systemic vascular resistance (SVR)
The resistance that blood must overcome to be able to move within the blood vessels. SVR is related to the amount of dilation or constriction in the blood vessel.
309
systole
The contraction, or period of contraction, of the heart, especially that of the ventricles.
310
temporal regions
The lateral portions on each side of the cranium.
311
tendons
The fibrous connective tissue that attaches muscle to bone.
312
testicle
A male genital gland that contains specialized cells that produce hormones and sperm.
313
thoracic cage
The chest or rib cage.
314
thoracic cavity
The chest cavity that contains the heart, lungs, espophagus, and great vessels.
315
thoracic spine
The 12 vertebrae that lie between the cervical vertebrae and the lumbar vertebrae. One pair of ribs is attached to each of the thoracic vertebrae.
316
thorax
The chest cavity that contains the heart, lungs, esophagus and great vessels.
317
thyroid cartilage
A firm prominence of cartilage that forms the upper part of the larynx; the Adam's apple.
318
tibia
The shin bone, the larger of the two bones of the lower leg.
319
tidal volume
The amount of air moved in and out of the lungs in one relaxed breath; about 500 mL for an adult.
320
topographic anatomy
The superficial landmarks of the body that serve as guides to the structures that lie beneath them.
321
torso
The trunk without the head and limbs.
322
trachea
The windpipe; the main trunk for air passing to and from the lungs.
323
transverse (axial) plane
An imaginary line where the body is cut into top and bottom parts.
324
triceps
The muscle in the back of the upper arm.
325
tunica media
The middle and thickest layer of tissue of a blood vessel wall, composed of elastic tissue and smooth muscle cells that allow the vessel to expand or contract in response to changes in blood pressure and tissue demand.
326
ulna
The inner bone of the forearm, on the side opposite the thumb.
327
ureter
A small, hollow tube that carries urine from the kidneys to the bladder.
328
urethra
The canal that conveys urine from the bladder to outside the body.
329
urinary bladder
A sac behind the pubic symphysis made of smooth muscle that collects and stores urine.
330
urinary system
The organs that control the discharge of certain waste materials filtered from the blood and excreted as urine.
331
vagina
A muscular distensible tube that connects the uterus with the vulva (the external female genitalia); also called the birth canal.
332
vasa deferentia
The spermatic duct of the testicles; also called vas deferens.
333
ventilation
The movement of air between the lungs and the environment.
334
ventral
The anterior surface of the body.
335
ventral respiratory group (VRG)
A portion of the medulla oblongata that is responsible for modulating breathing during speech.
336
ventricle
One of two lower chambers of the heart.
337
vertebrae
The 33 bones that make up the spinal column.
338
voluntary muscle
Muscle that is under direct voluntary control of the brain and can be contracted or relaxed at will; skeletal, or striated, muscle.
339
V/Q ratio
A measurement that examines how much gas is being moved effectively and how much blood is gaining access to the alveoli.
340
white blood cells
Blood cells that have a role in the body's immune defense mechanisms against infection; also called leukocytes.
341
xiphoid process
The narrow, cartilaginous lower tip of the sternum.
342
zygomas
The quadrangular bones of the cheek, articulating with the frontal bone, the maxillae, the zygomatic processes of the temporal bone, and the great wings of the sphenoid bone.
