15. The Special Senses

Each of the following statements is false. Correct each statement to make it true.

Photons are absorbed by rhodopsin in retinal ganglion cells.

Each of the following statements is false. Correct each statement to make it true.

Rods and cones are found in the fovea centralis.

Each of the following statements is false. Correct each statement to make it true.

In the dark, rods and cones produce action potentials.

You are at a park watching some deer 35 feet away from you. A friend taps you on the shoulder to ask a question. As you turn to look at your friend, who is standing just 2 feet away, what changes would your eyes undergo?

Your friend Shelly suffers from myopia (nearsightedness). You remember from your physics class that concave lenses cause light waves to spread or diverge and that convex lenses cause light waves to converge. What type of corrective lenses would you suggest to your friend?

(a) Concave lenses

(b) Convex lenses

Accessory glands that produce an oily secretion are the

a. Conjunctiva

b. Lacrimal glands

c. Tarsal glands

The portion of the fibrous layer that is white and opaque is the

a. Choroid

b. Cornea

c. Retina

d. Sclera

Of the neurons in the retina, the axons of which of these form the optic nerve?

a. Bipolar cells

b. Ganglion cells

c. Cone cells

d. Horizontal cells