The Only Part of the Eye That Is Adjustable for the Refraction

question 171

Multiple Choice

The only part of the eye that is adjustable for the refraction (focusing) of light rays is the:

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

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Definitions:

Soviet Union

A former federal socialist state in Northern Eurasia that existed from 1922 to 1991, known for its role in global political, military, and economic affairs.

Memory Storage

The process by which information is encoded, stored, and retained in the brain for future use.

Hippocampus

A neural center located in the limbic system; helps process explicit (conscious) memories—of facts and events—for storage.

Frontal Lobes

The portion of the cerebral cortex lying just behind the forehead; involved in speaking and muscle movements and in making plans and judgments.