As Light Waves Enter the Eye, Which Three Structures Do

question 284

Multiple Choice

As light waves enter the eye, which three structures do they pass through first, and in what order?

• A) pupil, iris, lens
• B) cornea, iris, pupil
• C) cornea, pupil, lens
• D) fovea, iris, pupil

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Definitions:

Spermatogenesis

The process by which a sperm develops from a spermatid.

Seminiferous Tubules

Narrow, coiled tubules within the testes where sperm are produced.

Cremaster

A muscle that raises and lowers the testes in response to temperature changes and sexual arousal, helping regulate testicular temperature.

Dartos

is a layer of smooth muscle in the scrotum that contracts in response to cold, wrinkling the scrotal skin and helping to regulate the temperature of the testes.