Which Letter on the Accompanying Figure Indicates Depth

question 8

Multiple Choice

Which letter on the accompanying figure indicates depth?

• A)A
• B)B
• C)C

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Definitions:

Ciliary Muscles

A group of muscles located in the eye that adjust the lens shape to help focus light on the retina.

Lens

A transparent, biconvex structure in the eye that focuses light rays onto the retina, enabling clear vision.

11-cis-retinal

A form of vitamin A that plays a key role in the photoreception process by changing shape when it absorbs light.

All-trans-retinal

A form of vitamin A that is involved in the visual cycle, essential for vision.