Choose the best answer.

1			Which of the following nerve endings is not found in the skin?
			A)	proprioceptors
			B)	Ruffini corpuscles
			C)	tactile corpuscles
			D)	Pacinian corpuscles
			E)	hair receptors
2			The blind spot in each visual field is a region in which
			A)	there are rod cells but no cone cells.
			B)	there are cone cells but no rod cells.
			C)	bipolar cells block light from reaching the rods and cones.
			D)	the iris casts a shadow on part of the retina.
			E)	the optic nerve leaves the eye.
3			Which of the following statements is not true?
			A)	Rod cells are responsible for night vision.
			B)	Cones are entirely responsible for day vision.
			C)	Cones have the visual pigment rhodopsin.
			D)	Cones have photopsins that respond to either blue, green, or orange-yellow light.
4			All receptors for _____ are confined to the head and are innervated by cranial nerves.
			A)	the special senses
			B)	somesthetic senses
			C)	proprioception
			D)	exteroception
			E)	chemoreception
5			What is the condition where the eyeball is abnormally long so that light rays focus in front of the retina?
			A)	astigmatism
			B)	presbyopia
			C)	hyperopia
			D)	myopia
6			During embryonic development, what structure does the optic stalk develop into?
			A)	the lens
			B)	the retina
			C)	the sclera
			D)	the optic nerve
7			From the list below, where are taste buds located?
			A)	the organ of Corti
			B)	the filiform papillae
			C)	the vallate papillae
			D)	the lingual frenulum
8			Which of the following are the only neurons in the body to routinely undergo mitosis?
			A)	basal cells in the taste buds
			B)	auditory hair cells
			C)	olfactory receptors
			D)	bipolar cells
9			Hair cells of the cochlea are stimulated as a result of the up-and-down vibrations of
			A)	the basilar membrane.
			B)	the tectorial membrane.
			C)	the vestibular membrane.
			D)	the tympanic membrane.
10			Umami is a meaty taste sensation stimulated by amino acids.
			A)	True
			B)	False
11			The retina is attached to the eyeball at the optic disc and an anterior ring called the suspensory ligament.
			A)	True
			B)	False
12			Conscious perception of vision occurs in the orbitofrontal cortex.
			A)	True
			B)	False
13			The semicircular ducts are filled with perilymph.
			A)	True
			B)	False
14			At normal daylight intensities, the rod cells are nonfunctional.
			A)	True
			B)	False
15			The lens is part of the fibrous tunic of the eye.
			A)	True
			B)	False
16			The solitary nucleus, which receives taste signals from the tongue, is in the temporal lobe.
			A)	True
			B)	False
17			Nerve fibers of the olfactory tracts lead to the thalamus.
			A)	True
			B)	False
18			The auditory tube leads from the pinna to the tympanic membrane.
			A)	True
			B)	False
19			The malleus is attached to the medial side of the tympanic membrane.
			A)	True
			B)	False
20			The movement of stereocilia on the hair cells of the organ of Corti causes _____ ions to rapidly enter the cells.
			A)	sodium
			B)	potassium
			C)	chloride
			D)	calcium
21			The sharpest, most detailed, daytime vision occurs at the optic disc.
			A)	True
			B)	False
22			The cochlear duct is filled with endolymph and the scala vestibuli is filled with endolymph.
			A)	True
			B)	False
23			Nerve fibers that make up the optic nerve all originate with bipolar cells.
			A)	True
			B)	False
24			Cataracts are due to thickening and clouding of the lens.
			A)	True
			B)	False