1) the digestive tract is also referred to as the
a) alimentary canal.
b) esophagus.
c) gi tract.
d) alimentary canal and the gi tract.
e) all of the answers are correct.
2) red blood cell production is regulated by the hormone
a) thymosin.
b) angiotensin.
c) erythropoietin.
d) m-csf.
e) renin.
3) the extraembryonic membrane that forms the fetal portion of the placenta is the
a) yolk sac.
b) amnion.
c) allantois.
d) chorion.
e) decidua.
4) the common passageway shared by the respiratory and digestive systems is the
a) larynx.
b) glottis.
c) vestibule.
d) pharynx.
e) trachea.
5) postganglionic fibers of the autonomic nervous system that innervate internal organs
do not rejoin the spinal nerve but form
a) dorsal rami.
b) ventral rami.
c) white rami.
d) gray rami.
e) sympathetic nerves.
6) the vertebral column contains ________ lumbar vertebrae.
a) 4
b) 5
c) 7
d) 12
e) 31
7) the region of the sarcomere that always contains thin filaments is the
a) z line.
b) m line.
c) h band.
d) a band.
e) i band.
8) which of the following is not a recognized structural classification for neurons?
a) anaxonic
b) bipolar
c) multipolar
d) pseudopolar
e) unipolar
9) a proenzyme secreted by the pancreas is
a) trypsinogen.
b) amylase.
c) carboxypeptidase.
d) lipase.
e) all of the answers are correct.
10) which of the following statements is false concerning the movement of fluid
between capillaries and interstitial space?
a) blood hydrostatic pressure forces fluid from the capillary to the interstitial space.
b) blood osmotic pressure moves fluid from the interstitial space to the capillary.
c) the osmotic pressure of the interstitial fluid is less than the blood osmotic pressure.
d) the hydrostatic pressure of the interstitial fluid is largely unimportant in determining
fluid movement.
e) the net filtration pressure is usually zero.
11) the origin of the frontalis muscle is the
a) mandible.
b) frontal bone.
c) occipital bone.
d) epicranial aponeurosis.
e) forehead.
12) molecules that have the same molecular formula but different structural formulas
are called
a) isotopes.
b) isomers.
c) isozymes.
d) isotypes.
e) isomoles.
13) extensive damage to oligodendrocytes in the cns could result in
a) loss of the structural framework of the brain.
b) a breakdown of the blood-brain barrier.
c) inability to produce scar tissue at the site of an injury.
d) decreased production of cerebrospinal fluid.
e) loss of sensation and motor control.
14) the all-or-none principle states that
a) all stimuli will produce identical action potentials.
b) all stimuli great enough to bring the membrane to threshold will produce identical
action potentials.
c) the greater the magnitude of the stimuli, the greater the magnitude of the action
potential.
d) only sensory stimuli can activate action potentials.
e) only motor stimuli can activate action potentials.