The Central, Transparent Part of the Outer Coat of the Eye

question 28

Multiple Choice

The central, transparent part of the outer coat of the eye covering the iris and pupil is the:

• A)retina.
• B)cornea.
• C)iris.
• D)conjunctiva.
• E)sclera.

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Definitions:

Agonist

A chemical or drug that binds to receptors in the brain and causes a reaction, often mimicking the action of naturally occurring substances.

Autonomic Division

The part of the nervous system responsible for control of the bodily functions not consciously directed, such as breathing, the heartbeat, and digestive processes.

Peripheral Nervous System

The part of the nervous system that lies outside the central nervous system, including nerves and ganglia, responsible for transmitting information to and from the brain and spinal cord.

Reflex

An automatic, involuntary reaction to a stimulus.