Quiz 8: Special Senses

Question 1

What region of the retina lacks photoreceptor cells?

Answer 1

Optic disc (blind spot)

Question 2

The gel-like substance housed in the posterior segment of the eye is the ________.

Answer 2

Vitreous humor (body)

Question 3

The biconvex structure that focuses light on the retina is the ________.

Answer 3

Lens

Question 4

What structure is lined with ceruminous glands?

Answer 4

External acoustic meatus (auditory canal)

Question 5

What is the reflexive movement of both eyes medially to view objects close to us?

Answer 5

Convergence

Question 6

What is the ability of the eye to focus on close objects?

Answer 6

Accommodation

Question 7

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

Answer 7

Binocular vision

Question 8

The fibrous covering of the eye consists of the white outer layer, known as the ________, and a transparent portion known as the ________.

Answer 8

Sclera; cornea

Question 9

Which layer of the eye contains photoreceptors known as rods and cones?

Answer 9

Retina

Question 10

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

Answer 10

Optic chiasma