1) the liver stores excess iron in ferritin.
2) interferons are secreted in response to bacterial infections.
3) the appendix is typically found in the right lower quadrant.
4) vasoreflexes can raise or lower blood pressure throughout the body.
5) uncompensated alkalosis is a ph imbalance that can only be corrected with clinical
intervention.
6) the pulmonary circuit is supplied by both the right and the left sides of the heart.
7) myxedema is characterized by low metabolic rate, sluggishness, and sleepiness.
8) neonatal immunity depends on igg and iga acquired through the placenta and
colostrum, respectively.
9) when a neuron is stimulated, na+ gates open and allow na+ to exit the cell.
10) osteoporosis often leads to an exaggerated thoracic spinal curvature, which iscalled
kyphosis.
11) blood flow is pulsatile in arteries and veins, but it is steady in capillaries.
12) lymphoid hemopoiesis occurs mainly in the bone marrow.
13) lymph originates in blood capillaries that pick up tissue fluid.
14) cervical and lumbar enlargements are wide points in the spinal cord marking the
emergence of motor nerves.
15) parasympathetic stimulation reduces heart rate.
16) osteoporosis is most common in elderly women because of the lack of
___________, which would otherwise inhibit ____________.
a. dietary calcium; estrogen production
b. osteoblasts; osteoclast activity
c. estrogen; osteoclast activity
d. parathyroid hormone; osteocyte activity
e. exercise; osteoblast activity
17) cells thatare thick in the middle and tapered toward the end are called __________
cells.
a. squamous
b. stellate
c. columnar
d. spheroid
e. fusiform
18) some lymphocytes can survive as long as __________.
a. days
b. weeks
c. months
d. years
e. decades
19) the enterogastric reflex serves to __________.
a. relax the stomach in preparation for swallowed food
b. stimulate acid and enzyme secretion when food enters the stomach
c. stimulate intestinal motility when there is food in the stomach
d. inhibit gastric motility when there is chyme in the small intestine
e. relax the ileocecal valve when chyme is on its way to the colon
20) where does saltatory conduction occur?
a. from node to node in myelinated fibers
b. from node to node in unmyelinated fibers
c. down the entire length of a myelinated fiber
d. down the entire length of an unmyelinated fiber
21) most membranes are composed of two or three tissue types. however, an example of
an exception is the ___________ membrane.
a. mucous
b. serous
c. synovial
d. cutaneous
e. basement
22) which of the following is not a type of fibrous connective tissue?
a. reticular tissue
b. hyaline cartilage
c. dense regular connective tissue
d. dense irregular connective tissue
e. areolar tissue
23) planning, motivation, and social judgment are functions of the brain associated with
which part of the cerebrum?
a. frontal lobe
b. parietal lobe
c. occipital lobe
d. insula
e. temporal lobe
24) an extended period of time between the p wave and the qrs complex may indicate
which of the following?
a. the signal is taking too long to get to the av node.
b. the signal is traveling too quickly to the av node.
c. ventricular contraction is taking longer than usual.
d. ventricular contraction is faster than usual.
e. the atria are not contracting.
25) in order formuscle to continue contracting during anaerobic fermentation, which of
the following is essential?
a. cholinesterase inhibitors
b. protease
c. myokinase
d. acetylcholinesterase
e. acid phosphatase
26) which center bears the primary responsibility for generating the respiratory rhythm,
but is influenced by several other centers?
a.prg
b.drg
c.vrg
d.srg
27) which of the following musclesis innervated by the obturator nerve?
a. gracilis
b. biceps femoris
c. tibialis anterior
d. soleus
e. sartorius
28) __________ differ from one another in their number of neutrons and atomic mass.
a.cations
b.anions
c.isotopes
d.electrolytes
e.free radicals