The Iris Is a Doughnut-Shaped Ring of Muscle That Adjusts

question 226

Multiple Choice

The iris is a doughnut-shaped ring of muscle that adjusts the size of the

• A) cochlea.
• B) cornea.
• C) pupil.
• D) lens.

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Definitions:

Feature Detector

A type of neuron in the brain that responds to specific attributes of a stimulus, such as angles or edges in vision.

Visual Cortex

The part of the cerebral cortex involved in processing visual information, located in the occipital lobe.

Neuron

A specialized cell transmitting nerve impulses; a fundamental component of the nervous system.

Feature Detector

Brain cells that react to particular aspects of a stimulus, like lines, borders, or motion.