1) the partial pressure of oxygen in arterial blood is approximately
a) 40 mm hg.
b) 45 mm hg.
c) 50 mm hg.
d) 70 mm hg.
e) 100 mm hg.
2) complications related to arteriosclerosis account for roughly ________ percent of
deaths in the united states.
a) 30
b) 60
c) 20
d) 50
e) 25
3) all of the following occur at puberty, except that
a) fsh levels rise.
b) gnrh levels decline.
c) levels of sex hormones rise.
d) gametogenesis begins.
e) secondary sexual characteristics begin to develop.
4) glomerular (bowman’s) capsule and the glomerulus make up the
a) renal pyramid.
b) nephron loop (loop of henle).
c) renal corpuscle.
d) renal papilla.
e) collecting tubule system.
5) which of the following movements is a good example of hyperextension?
a) opening the mouth
b) turning the hand palm upward
c) extreme bending of the head backwards
d) moving the hand toward the shoulder
e) spreading the fingers
6) low frequency sounds stimulate hair cells on which part of the basilar membrane?
a) area close to the round window
b) the entire membrane
c) the distal end
d) the middle region
e) area close to the oval window
7) sperm cannot fertilize an oocyte until they
a) undergo capacitation.
b) undergo activation.
c) lose their acrosome.
d) are in the vagina for 3 days.
e) are activated by sustentacular cells of the vagina.
8) cells can respond to ________ hormone(s) at the same time.
a) only one
b) a few
c) fifty
d) an unlimited number of
9) all of the following are components of ecf, except
a) cerebrospinal fluid.
b) peritoneal fluid.
c) lymph.
d) aqueous humor.
e) rbcs.
10) the vastus lateralis, vastus medialis, and vastus intermedius muscles originate on the
________ of the femur.
a) greater trochanter
b) medial epicondyle
c) lesser trochanter
d) linea aspera
e) capitulum
11) to reduce brain swelling by pulling water out of brain cells, a substance can be
injected intravenously to increase the osmotic pressure of interstitial fluid. which of the
following properties can this substance not have in order to be effective?
a) permeable to capillary endothelium
b) nontoxic to neurons
c) permeable to brain plasma membranes
d) impermeable to brain plasma membranes
e) soluble in water
12) pulmonary veins carry blood to the
a) right atrium.
b) left atrium.
c) lungs.
d) aorta.
e) pulmonary circuit.
13) the trabeculae of spongy bone
a) are organized parallel to the long axis of the bone.
b) are organized along stress lines.
c) are composed mostly of cartilage.
d) will collapse under stress.
e) are concentrated in the cortex of the diaphysis.
14) during starvation
a) carbohydrate utilization increases.
b) gluconeogenesis ceases.
c) there is a decline in circulating ketone bodies.
d) muscle proteins are used as an energy source.
e) carbohydrate reserves maintained by metabolizing inorganic compounds.
15) the small vessels that capillaries drain into are called
a) arterioles.
b) venules.
c) arteries.
d) veins.
e) capillaries.
16) the outermost connective-tissue covering of nerves is the
a) endoneurium.
b) endomysium.
c) perineurium.
d) epineurium.
e) epimysium.
17) skin can regenerate effectively even after considerable damage has occurred
because
a) the epidermis of the skin has a rich supply of small blood vessels.
b) stem cells persist in both epithelial and connective-tissue components of the skin
even after injury.
c) fibroblasts in the dermis can give rise to new germinal cells in the epidermis.
d) contraction in the area of the injury brings cells of adjacent strata together.
e) cells of the stratum germinativum cannot migrate to other positions in the skin.
18) the function of pulmonary ventilation is to
a) remove carbon dioxide from the blood.
b) supply oxygen to the blood.
c) maintain adequate alveolar ventilation.
d) remove air from dead air space.
e) prevent gas exchange in the bronchioles.