Chapter 8: Special Senses

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Which one of the following nerves serves the anterior tongue?

facial

The pigmented portion of the eye that has a rounded opening through which light passes is the ________.

iris

The ________ gland is located above the lateral end of each eye and releases tears.

lacrimal

Stimulation of sour receptors occurs in response to ________.

lemons

Vitamin A deficiency can lead to ________.

night blindness

Fibers from the medial side of each eye cross over to the opposite side of the brain at the ________.

optic chiasma

The fusion of ear bones is known as ________.

otosclerosis

The small, peglike projections of the tongue's surface are called ________.

papillae

The age-related condition resulting from decreased lens elasticity is known as ________.

presbyopia

The rounded opening of the iris through which light enters the eye is called the ________.

pupil

The aqueous humor of the eye is reabsorbed into venous blood through the ________.

scleral venous sinus (canal of Schlemm)

Dynamic equilibrium receptors are found in the ________.

semicircular canals

Dynamic equilibrium receptors that detect information about angular or rotational movements of the head are housed in the ________.

semicircular canals

Gustatory hairs are to taste as olfactory hairs are to ________.

smell

"Crossed eyes" resulting from unequal control of the external eye muscles is called ________.

strabismus

The five taste sensations are ________.

sweet, sour, bitter, salty, umami

The external acoustic meatus (auditory canal) is a narrow chamber situated in the ________ bone.

temporal

The only special sense that is NOT fully functional at birth is ________.

vision

The overlapping of the two visual fields that provides for depth perception (3-D vision) results in ________.

binocular vision


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