1) a scuba diver has been deep underwater and suddenly rises to the surface too fast.
why does the diver get decompression sickness?
a) pressure decreases and carbon dioxide rushes into cells.
b) pressure changes too fast and the carbon dioxide in the blood forms bubbles.
c) pressure decreases too fast and nitrogen gas in the blood forms bubbles.
d) the gas in the scuba tank had too much pressure and rapid ascent forces too much air
into the blood.
e) pressure increases too fast and too much oxygen enters the blood and forms bubbles.
2) prl is to ________ as acth is to ________.
a) prolactin; corticotropin
b) oxytocin; mammotropin
c) gonadotropin; mammotropin
d) oxytocin; cortisol
3) during the t wave of the electrocardiogram, the ventricles are
a) depolarizing.
b) repolarizing.
c) contracting.
d) relaxing.
e) both repolarizing and relaxing.
4) the anterior horns of the spinal cord contain mainly
a) sensory nuclei.
b) somatic motor nuclei.
c) autonomic motor nuclei.
d) nerve tracts.
e) sympathetic nuclei.
5) what percent of energy released from catabolism is lost as heat?
a) 20
b) 30
c) 40
d) 50
e) 60
6) ion channels that are always open are called ________ channels.
a) active
b) gated
c) leak
d) regulated
e) local
7) the structural units of mature compact bone are called
a) lacunae.
b) osteocytes.
c) osteons.
d) canaliculi.
e) lamellae.
8) which of these is not one of the extraembryonic membranes?
a) yolk sac
b) amnion
c) allantois
d) chorion
e) umbilical cord
9) a male has a ________ pelvic outlet when compared to the woman’s pelvic outlet.
a) larger
b) longer
c) smaller
d) wider
e) deeper
10) fatty acids and many amino acids cannot be used for ________, because their
catabolic pathways produce acetyl-coa.
11) the superior sagittal sinus collects blood from the
a) heart.
b) lungs.
c) brain.
d) arms.
e) legs.
12)
figure 8-2 the humerus
which structure articulates with the glenoid cavity?
a) 3
b) 4
c) 5
d) 6
e) 7
13) the most numerous white blood cells in peripheral circulation are the
a) neutrophils.
b) eosinophils.
c) basophils.
d) lymphocytes.
e) monocytes.
14) the first step in the process of photoreception is
a) the bleaching of rods.
b) the bleaching of cones.
c) absorption of a photon by a visual pigment.
d) inhibition of the sodium pumps.
e) release of neurotransmitter.
15) pulmonary ventilation refers to the
a) movement of air into and out of the lungs.
b) movement of dissolved gases from the alveoli to the blood.
c) movement of dissolved gases from the blood to the interstitial space.
d) movement of dissolved gases from the interstitial space to the cells.
e) utilization of oxygen.
16) capillaries that have a complete lining are called
a) continuous capillaries.
b) fenestrated capillaries.
c) sinusoidal capillaries.
d) sinusoids.
e) vasa vasorum.
17) a dna nucleotide is composed of
a) three amino acids.
b) a codon and an anticodon.
c) one nitrogen base, deoxyribose sugar, and a phosphate group.
d) four nitrogen bases.
e) protein, lipid, and ribose sugar.
18) which of the following is not a property of synovial joints?
a) freely movable
b) lined by a secretory epithelium
c) covered by a serous membrane
d) contain synovial fluid
e) covered by a capsule
19) the main purpose of the citric acid cycle is to
a) produce acetyl coa.
b) produce proteins for energy storage.
c) phosphorylate glucose molecules.
d) supply hydrogen atoms to the mitochondria.
e) produce citric acid to make vitamin c.