71) The ossicle that is shaped like the stirrup of a saddle is the
A) tympanic membrane.
B) incus.
C) malleus.
D) stapes.
72) The cristae ampullares in the inner ear are located in the
A) saccule.
B) utricle.
C) semicircular ducts.
D) cochlear duct.
73) What structure regulates the amount of light passing to the visual receptors of the eye?
A) aqueous humor
B) vitreous humor
C) lens
D) pupil
74) Which of the following could
not
be seen as one looks into the eye with an ophthalmoscope?
A) macula lutea
B) optic chiasma
C) fovea centralis
D) optic disc
75) The center for vision in the cerebral cortex is located in the
A) temporal lobe.
B) frontal lobe.
C) occipital lobe.
D) parietal lobe.
76) During embryonic development, the retina of the eye develops from
A) the surface ectoderm.
B) an outpocketing of the diencephalon.
C) the mesoderm.
D) the mesoderm and the endoderm.
77) Filaments that pass through the olfactory foramina of the cribriform plate belong to
A) axons of the olfactory receptor cells.
B) dendrites of the olfactory receptor cells.
C) axons of the olfactory bulb mitral cells.
D) dendrites of the olfactory bulb mitral cells.
78) Which of the following is
not
part of the flow of taste sensation along the gustatory pathway to the cerebral cortex?
A) hypothalamic appetite centers
B) solitary nucleus of the medulla oblongata
C) thalamic nuclei
D) vagus nerve
79) Ordinarily, it is
not
possible to transplant tissues from one person to another without rejection, yet corneas can be transplanted with impunity. This is because the cornea
A) is not a human structure.
B) has no nerve supply.
C) has no blood supply, except around the periphery.
D) is exposed and easily accessible.
80) There are three layers of neurons in the retina. Which of the following neurons have axons that form the optic nerves?
A) bipolar cells
B) ganglion cells
C) cone cells
D) rod cells
81) Gustatory cells are located in all of the following areas
except
A) on the apical surface of vallate papillae on the tongue.
B) on the fungiform papillae of the anterior tongue.
C) on the inner surface of the cheeks.
D) on the posterior wall of the pharynx.
82) The difference between the membranous ampulla and cupula of the ear is that
A) the ampulla contains the crista ampullaris, which consists of hair cells and a cupula.
B) the ampulla contains the utricle and saccule, whereas the cupula contains the crista ampullaris.
C) the ampulla is the enlargement at the base of the semicircular canals, whereas the cupula is encrusted with otoliths and lies within the vestibule.
D) the ampulla is the opening to the cochlea, whereas the cupula is found within the vestibule.