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1) which of these changes does not occur at birth when an infant takes its first breaths?
a) blood flow to the lungs decreases.
b) the resistance in the pulmonary arteries decreases.
c) changes in blood flow cause the foramen ovale to close.
d) air enters the alveoli.
e) gas diffuses across the alveolar-capillary membrane.
2) which of the following substances are not normally found in the filtrate?
a) chloride ions
b) water
c) protein
d) urea
e) glucose
3)
figure 11-2 major posterior skeletal muscles
identify the muscle labeled "7"
a) anconeus
b) extensor carpi ulnaris
c) extensor digitorum
d) pronator teres
e) brachioradialis
4) sympathetic and parasympathetic fibers that innervate the heart pass through the
a) celiac plexus.
b) hypogastric plexus.
c) cardiac plexus.
d) sphenopalatine ganglia.
e) otic ganglia.
5) ________ neurons form the afferent division of the pns.
a) visceral sensory
b) sensory
c) neural sensory
d) somatic sensory
e) motor
6) the ventricle associated with the pons and upper medulla is the
a) first.
b) second.
c) third.
d) fourth.
e) lateral.
7) in response to increased levels of aldosterone, the kidneys produce
a) a larger volume of urine.
b) urine with a higher concentration of sodium ions.
c) urine with a lower concentration of potassium ions.
d) urine with a lower concentration of sodium ions.
e) urine with less glucose.
8) when an antigen is bound to a class i mhc molecule, it can stimulate a ________ cell.
a) b
b) plasma
c) helper t
d) cytotoxic t
e) nk
9) all of the following membrane transport mechanisms are passive processes, except
a) diffusion.
b) facilitated diffusion.
c) vesicular transport.
d) osmosis.
e) movement of water.
10) which of the following movements is a good example of abduction?
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
