15. The Special Senses

True or False: if false, choose the answer that corrects the statement.

Waves of light must pass through both the ganglion and pigmented cells before reaching the photoreceptors.

Once light is absorbed, what is the path of the nervous signal?

Which part of the neural layer continues into and becomes the optic nerve?

Which of the following statements is true for cones.

Which sequence best describes a normal route for the flow of tears from the eyes into the nasal cavity?

a. Lacrimal canaliculi, lacrimal sacs, nasolacrimal ducts

b. Lacrimal ducts, lacrimal canaliculi, nasolacrimal ducts

c. Nasolacrimal ducts, lacrimal canaliculi, lacrimal sacs

Since there are only three types of cones, how can you explain the fact that we see many more colors?