21) Calcium carbonate crystals of the macula.
A) stapedius
B) modiolus
C) otoliths
D) helicotrema
E) scala tympani
22) Endolymph-filled structure containing receptors for hearing.
A) vestibule
B) saccule
C) utricle
D) cochlear duct
E) semicircular canals
23) The basilar membrane supports the
A) spiral lamina.
B) modiolus.
C) spiral ganglion.
D) bony labyrinth.
E) spiral organ.
24) Gel-like structure embedded with the tips of cochlear hair cells.
A) basilar membrane
B) tectorial membrane
C) tympanic membrane
D) scala tympani
E) scala vestibule
25) Along with the saccule, this structure senses linear acceleration.
A) vestibule
B) spiral organ
C) utricle
D) cochlear duct
E) semicircular canals
26) Which of the following structures in the eye are pigmented?
A) the cornea
B) sclera
C) the retina
D) lens
27) Which of the following areas has the highest concentration of cones?
A) the optic disc
B) the macula lutea
C) the fovea centralis
D) the ora serrata retinae
28) Which of the following statements does
not
correctly describe the spiral organ of Corti?
A) High-frequency sounds stimulate hair cells at the basal end of the basilar membrane.
B) The "hairs" of the receptor cells are embedded in the tectorial membrane.
C) The spiral organ is part of the cochlear duct, which equals the scala media.
D) The tectorial membrane bends with vibrations, whereas the basilar membrane is rigid and fixed.
29) Endolymph is made
A) from perilymph.
B) from the dura mater.
C) in the scala vestibuli.
D) in the stria vascularis.
30) "Uncinate fits" are characterized by
A) auditory hallucinations.
B) photo sensitivity.
C) imaginary odors.
D) vertigo.