When You Try to Focus on the Tip of Your

question 217

Multiple Choice

When you try to focus on the tip of your nose,

• A) the pupils dilate.
• B) the ciliary muscles relax.
• C) the lens becomes more spherical.
• D) the tension on the suspensory ligament increases.
• E) the lens becomes flatter.

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Definitions:

Autonomic Nervous System

The part of the peripheral nervous system that controls involuntary functions in the body, such as heart rate, digestion, and respiratory rate.

Spinal Reflexes

Automatic, involuntary movements or actions of the body initiated in the spinal cord without the involvement of the brain.

Somatic Nervous System

The part of the peripheral nervous system that controls voluntary movements of the body and transmits sensory information to the central nervous system.

Corpus Callosum

The large band of neural fibers connecting the two hemispheres of the brain, facilitating interhemispheric communication.