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1) the cardiovascular reflexes are based in the
a) cerebrum.
b) mesencephalon.
c) cerebellum.
d) medulla oblongata.
e) spinal cord.
2) muscles known as the pharyngeal constrictors function in
a) mastication.
b) moving the tongue.
c) swallowing.
d) esophageal peristalsis.
e) opening the cardiac sphincter.
3) activation of which kind of receptor causes heart rate to increase?
a) alpha-one receptor
b) beta-one receptor
c) muscarinic receptor
d) beta-two receptor
e) preganglionic
4) the transparent portion of the fibrous tunic is the
a) conjunctiva.
b) cornea.
c) iris.
d) pupil.
e) canthus.
5) a type of intercellular junction that stops materials from crossing an epithelium
between cells is termed a(n)
a) occluding junction
b) gap junction
c) intermediate junction
d) desmosome
e) all of the answers are correct
6) which of the following elements is necessary for the production of thyroid hormone?
a) sodium
b) iodine
c) potassium
d) iron
e) colloid
7) in which of the following would the rate of impulse conduction be the greatest?
a) a myelinated fiber of 10-m diameter
b) a nonmyelinated fiber of 20-m diameter
c) a myelinated fiber of 1-m diameter
d) a nonmyelinated fiber of 10-m diameter
e) the same in all because of the all-or-none principle
8) the "rotator cuff" of the shoulder functions to
a) reinforce the joint capsule.
b) limit the range of movements.
c) allow biaxial movement.
d) allow monaxial movement.
e) reinforce the joint capsule and limit the range of movements.
9) the unit of measurement for pressure preferred by many respiratory therapists is
a) mm hg.
b) torr.
c) cm h2o.
d) psi.
e) centigrade.
10) after suffering a stroke, mary finds that she cannot move her right arm. this would
suggest that the stroke damage is in the area of the ________ lobe.
a) right frontal
b) left frontal
c) right temporal
d) left temporal
e) occipital
11) hypoventilation leads to
a) respiratory acidosis.
b) respiratory alkalosis.
c) metabolic acidosis.
d) metabolic alkalosis.
12) an important artery that supplies blood to the brain is the ________ artery.
a) internal carotid
b) external carotid
c) mental
d) azygos
e) maxillary
