Why do wrist extensor muscles contract when a person flexes his or her fingers to make a fist?
A) they contract as fixators (stabilizers) to prevent the hand from flexing at the wrist joint
B) they contract as fixators (stabilizers) to prevent the hand from extending at the wrist joint
C) they contract as antagonists to prevent the fingers from extending
D) they contract as antagonists to prevent the fingers from flexing
Correct Answer:
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