The Lens of the Eye

question 242

Multiple Choice

The lens of the eye

• A) has convex surfaces.
• B) is stronger when it is flatter.
• C) contributes most extensively to the eye's total refractive ability.
• D) two of these answers.
• E) all of these answers.

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Definitions:

Brainstem

The lower part of the brain, connecting the cerebrum with the spinal cord, and responsible for controlling basic life functions such as breathing and heartbeat.

Cerebral Cortex

The outer layer of the brain's cerebrum, involved in high-level functions such as sensory perception, cognition, generation of motor commands, and language.

Convoluted Outer Layer

Referring typically to the cerebral cortex of the brain, noted for its deeply wrinkled surface, increasing the surface area for neural connections.

Corpus Callosum

A large band of neural fibers connecting the left and right cerebral hemispheres, facilitating inter-hemispheric communication.