Multiple choice

The opposition and extension movement of the thumb is regulated by_________.

  1. the abductor hallucis

  2. the abductor pollicis brevis

  3. the adductor brevis

  4. the adductor hallucis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This muscle is present in the hand and functions as an abductor of the thumb. It regulates the opposition and extension of the thumb.

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