After a serious auto accident, your friend has difficulty sitting securely in her chair, and she often drops her fork or misses her mouth as she tries to feed herself. She may have suffered damage to which area of the brain?

题目解析

Question

After a serious auto accident, your friend has difficulty sitting securely in her chair, and she often drops her fork or misses her mouth as she tries to feed herself. She may have suffered damage to which area of the brain? 题目解析Single choice

A

Cerebellum

B

Adrenal cortex

C

Reticular formation

D

Pons

题目解析

BlackTom AI · Accepted Answer

The scenario describes problems with sitting securely, dropping objects, and missing the mouth while feeding after a serious accident. These symptoms point toward impaired coordination and fine motor control.
Option 1: Cerebellum. The cerebellum is the brain region chiefly responsible for balance, posture, and coordinated, smooth movements. Damage here commonly causes ataxia, tremor, and dysmetria (overshooting/undershooting movements), which aligns with difficulty sitting securely and clumsy feeding actions.
Option 2: Adrenal cortex. This gland governs hormone production (like cortisol and other steroids) and is not directly involved in coordinating movement or maintaining balance. Damage would more likely present with hormonal imbalances rather than the motor coordination deficits described.
Option 3: Reticular formation. This network in the brainstem modulates arousal, attention, and basic autonomic functions. While it affects alertness, it does not primarily control precise motor coordination or balance, so the eating and posture problems aren’t best explained by reticular formation injury.
Option 4: Pons. The pons is part of the brainstem that relays signals and contains some motor pathways, but the classic, specific deficit of impaired coordination and balance is more characteristically attributed to cerebellar dysfunction. While pontine damage can cause various deficits, it is not the most direct match for the described symptoms.

After a serious auto accident, your friend has difficulty sitting securely in her chair, and she often drops her fork or misses her mouth as she tries to feed herself. She may have suffered damage to which area of the brain? 题目解析Single choice

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