1) all target cells
a) have hormone receptors.
b) respond to electrical signals.
c) secrete hormones.
d) produce their own hormones.
e) are in the blood.
2) the tract that links the cerebellum with the pons is the
a) superior cerebellar peduncle.
b) inferior cerebellar peduncle.
c) middle cerebellar peduncle.
d) longitudinal fibers.
e) obverse fibers.
3) dead skin cells are shed in thin sheets because they are held together by ‘spots” of
proteoglycan reinforced by intermediate filaments. such strong intercellular connections
are called
a) gap junctions
b) intermediate junctions
c) tight junctions
d) desmosomes
e) junctional complexes
4) microfilaments
a) anchor the cytoskeleton to membrane proteins.
b) control the consistency of cytoplasm.
c) with myosin, produce cell movement.
d) consist of the protein called actin.
e) all of the answers are correct.
5) interactions between actin and myosin filaments of the sarcomere are responsible for
a) muscle fatigue.
b) the conduction of neural stimulation to the muscle fiber.
c) muscle contraction.
d) muscle relaxation.
e) the striped appearance of skeletal muscle.
6) the suprarenal medullae secrete
a) medullin.
b) epinephrine.
c) norepinephrine.
d) renin.
e) both epinephrine and norepinephrine.
7) the function of an atrium is to
a) collect blood.
b) pump blood to the lungs.
c) pump blood into the systemic circuit.
d) pump blood to the ventricle.
e) collect blood then pump it to the ventricle.
8) in the human eye, most refraction occurs when light passes through the
a) iris.
b) cornea.
c) lens.
d) aqueous humor.
e) vitreous humor.
9)
figure 14-1 the circulation of cerebrospinal fluid
identify the structure labeled “6”
a) choroid plexus
b) fourth ventricle
c) lateral ventricle
d) cerebral aqueduct
e) subarachnoid space
10) which embryonic germ layer forms the linings of the respiratory and digestive
tracts?
a) mesoderm
b) ectoderm
c) trophoderm
d) endoderm
e) epiderm
11) the space between the iris and ciliary body and the lens is the
a) anterior chamber.
b) posterior chamber.
c) pupil.
d) canal of schlemm.
e) vitreous body.
12) which hormone plays a central role in determining the rate of sodium reabsorption
and potassium secretion?
a) adh
b) aldosterone
c) bnp
d) anp
e) epinephrine
13) injury to the neurons of a collateral ganglion would affect the function of the
a) heart.
b) pupils.
c) sweat glands.
d) digestive tract.
e) arrector pili muscles.
14) tina falls while climbing a tree and lands on her back. her frightened parents take
her to the emergency room, where she is examined. her knee-jerk reflex is normal and
she exhibits a plantar reflex (negative babinski reflex). these results suggest that
a) tina has injured one of her descending nerve tracts.
b) tina has injured one of her ascending nerve tracts.
c) tina has a spinal injury in the lumbar region.
d) tina has a spinal injury in the cervical region.
e) tina suffered no damage to her spinal cord.
15)
figure 28-1 the male reproductive system
identify the structure labeled “12”
a) prostatic urethra
b) ejaculatory duct
c) ductus deferens
d) vas deferens
e) membranous urethra
16) the reproductive system includes
a) gonads and external genitalia.
b) ducts that receive and transport the gametes.
c) accessory glands and organs that secrete fluids.
d) organs for copulation.
e) all of the answers are correct.
17) which of these descriptions best matches the term external intercostal?
a) accessory muscle of expiration
b) accessory muscle of inspiration
c) primary muscle of inspiration
d) contraction increases airway resistance
e) affects lung compliance
18)
figure 17-1 the sectional anatomy of the eye
identify the structure labeled “9”
a) suspensory ligaments
b) optic disc
c) sclera
d) fovea
e) pupil
19)
figure 10-2 muscle contractions
what is the contraction in graph (d) called?
a) complete tetanus
b) incomplete tetanus
c) twitch
d) wave summation
e) treppe
20) the cremaster muscle can raise and lower the testes to regulate ________ of the
testes.
21) the technical term for chewing is ________.
22) placental functions are concentrated in a disc-shaped area in the endometrium
called the ________.
23) ventilation performed by contraction of the external intercostals muscle is known as
________ breathing.
24) a thickened area of scar tissue that is covered by a shiny, smooth epidermal surface
is called a(n) ________.
25) the blood vessel that branches to form a right common carotid and subclavian artery
is the ________.