Which Part of the Eye Regulates the Size of the Pupil

question 89

Multiple Choice

Which part of the eye regulates the size of the pupil?

• A) iris
• B) lens
• C) retina
• D) sclera

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Definitions:

Homeostasis

The self-regulating process by which biological systems maintain stability while adjusting to conditions optimal for survival.

Car Seat

A safety seat designed specifically for children in vehicles, aimed at protecting young passengers during travel.

Arousal Theory

A theory suggesting that people are motivated to maintain an optimal level of arousal, which varies by individual.

Homeostasis

The process by which a living organism maintains stable internal conditions despite changes in its external environment.