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1) endurance athletes commonly have a resting heart rate as low as 40 bpm, and a
stroke volume as low as 50 ml/beat.
2) spermiogenesis is the last stage of meiosis.
3) a dermatome is a nerve innervating a specific region in the skin.
4) binding of norepinephrine (ne) to an alpha-adrenergic receptor is usually excitatory,
and binding to a beta-adrenergic receptor is usually inhibitory.
5) fluid intake is governed mainly by hypothalamic receptors called osmoreceptors.
6) the adrenal medulla is a modified sympathetic ganglion.
7) hinge joints, such as the tibiofemoral joint, are monoaxial.
8) in general, __________ have a 2:1 ratio of hydrogen to oxygen.
a.enzymes
b.proteins
c.lipids
d.carbohydrates
e.nucleic acids
9) which of the following is not a feature of the sympathetic division of the ans?
a. itoriginates in the thoracolumbar region of the spinal cord.
b. it has long postganglionic fibers.
c. it has long preganglionic fibers.
d. its ganglia are adjacent to the spinal column.
e. it has an extensive neural divergence and a relative widespread effect.
10) the great majority of which tracts pass through the corpus callosum?
a. ascending
b. descending
c. projection
d. commissural
e. association
11) the __________ is the gonad and the __________ is the gamete.
a. testis; ovary
b. testis; semen
c. testis; sperm
d. sperm; semen
e. semen; sperm
12) muscle fibers are arranged in bundles called ___________.
a. compartments
b. fascicles
c. retinacula
d. aponeuroses
e. groups
13) intramembranous ossification produces the __________.
a. irregular bones of the vertebrae
b. flat bones of the skull
c. long bones of the limbs
d. short bones of the wrist
e. short bones of the ankle
14) the sympathetic chain of ganglia is found at the __________ levels of the spinal
cord.
a. cervical and thoracic
b. thoracic and lumbar
c. thoracic, lumbar and sacral
d. sacral, lumbar and coccygeal
e. cervical, thoracic, lumbar, sacral, and coccygeal
15) in the brain, neurons are more abundant than neuroglia.
16) a cell finishing mitosis has __________ dna molecules, while a cell finishing dna
replication has __________ dna molecules.
a. 46; 46
b. 46; 92
c. 46; 23
d. 23; 46
e. 23; 23
17) most oxygen is transported in the blood bound to __________.
a. the plasma membrane of erythrocytes
b. alpha chains in hemoglobin
c. beta chains in hemoglobin
d. delta chains in hemoglobin
e. heme groups in hemoglobin
18) older people may require lower drug doses than younger people because
__________.
a. their organs are more sensitive to drugs
b. they have lower rates of renal clearance
c. they do not absorb as much drug from the small intestine
d. there is less tissue mass to treat
e. a lifetime of mutations results in unpredictable drug reactions
19) which of these processes occurs during a cell's first gap (g1) phase?
a. dna is semiconservatively replicated.
b. the nuclear envelope breaks down.
c. the cell synthesizes the enzymes that control mitosis.
d. the cell synthesizes proteins and grows.
e. the chromatin condenses into visible chromosomes.
20) which cranial nerve pathway would be used to look cross-eyed at the tip of your
nose?
a. trochlear nerve (iv)
b. oculomotor nerve (iii)
c. abducens nerve (vi)
d. facial nerve (vii)
e. vagus nerve (x)
21) to stimulate muscle contraction, acetylcholine is released from the ___________
into the synaptic cleft.
a. synaptic vesicles
b. junctional folds
c. sarcoplasmic reticulum
d. sarcolemma
e. terminal cisterna
22) phosphate is necessary for all of the following except __________.
a. atp
b. dna
c. phospholipids
d. rna
e. amino acids
23) while standing, looking up at the stars requires__________.
a. elevation of the mandible
b. extension of the neck
c. hyperextension of the neck
d. abduction of the neck
e. dorsiflexion of the neck
24) the pseudostratified columnar epithelium of the bronchi in smokers may transform
into stratified squamous epithelium. this is an example of__________.
a. neoplasia
b. metaplasia
c. atrophy
d. differentiation
e. hyperplasia
25) most metabolic and regulatory functions in a neuron happen where?
a. the axon
b. the soma
c. the dendrites
d. the axon hillock
e. the schwann cell
