What Structure Regulates the Amount of Light Passing to the Visual

question 98

Multiple Choice

What structure regulates the amount of light passing to the visual receptors of the eye?

• A) cornea
• B) lens
• C) iris
• D) aqueous humor

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Definitions:

Conditioned Stimulus

An initially neutral trigger that, following its association with an unconditioned stimulus, ultimately elicits a conditioned reaction.

Unconditioned Stimulus

In behavioral psychology, an automatically triggering stimulus that leads to a natural response without the need for prior learning.

Spontaneous Recovery

A phenomenon in learning where a previously extinguished response re-emerges after a pause in exposure to the conditioning stimulus.

Learned Response

A behavior developed as the result of conditioning, where an individual learns to respond in a certain way to a specific stimulus.