Aphagia (Lack of Eating)can Be Produced by Lesioning The

question 83

Multiple Choice

Aphagia (lack of eating) can be produced by lesioning the:

• A) ventromedial hypothalamus.
• B) lateral hypothalamus.
• C) dorsal hypothalamus.
• D) anterior hypothalamus.

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Definitions:

Thalamus

A large mass of gray matter deeply situated in the forebrain at the topmost portion of the brainstem, functioning primarily as a central relay station for sensory impulses and as a center for pain perception.

Brain Stem

The posterior part of the brain, adjoining and structurally continuous with the spinal cord, responsible for basic vital life functions such as breathing and heartbeat.

Midbrain

A central part of the brainstem that plays an important role in vision, hearing, motor control, sleep/wake, arousal, and temperature regulation.

Pons

A part of the brainstem that links the medulla oblongata and the thalamus, critical for regulating breathing and sleep cycles.