Reflex arcs · Physiology

The crossed extensor reflex is functionally important because it:

  1. Enhances perception of the painful stimulus
  2. Maintains balance during withdrawal
  3. Inhibits antagonist muscles on the same side only
  4. Prevents fatigue of the withdrawing limb
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Correct answer: Maintains balance during withdrawal

The crossed extensor reflex activates extensor muscles on the opposite side to support body weight, maintaining balance when one limb withdraws from a stimulus.

Difficulty: Medium Question 10 of 20

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