Which muscle flexes and abducts the wrist?

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Study for the Muscle Actions and Functions – Anatomy and Movement Test. Equip yourself with multiple choice questions, each with detailed explanations and hints. Prepare confidently for your exam!

Multiple Choice

Which muscle flexes and abducts the wrist?

Explanation:
Flexor carpi radialis is the muscle that can both bend the wrist and move it toward the thumb side. Its tendon runs along the radial (thumb) side of the forearm and inserts on the bases of the second and third metacarpals. When it contracts, it pulls the hand forward (wrist flexion) and toward the radius, producing abducting (radial deviation) of the wrist. The other muscles either don’t produce wrist flexion with radial deviation or instead produce ulnar deviation or extension, so they don’t fit the action combination described.

Flexor carpi radialis is the muscle that can both bend the wrist and move it toward the thumb side. Its tendon runs along the radial (thumb) side of the forearm and inserts on the bases of the second and third metacarpals. When it contracts, it pulls the hand forward (wrist flexion) and toward the radius, producing abducting (radial deviation) of the wrist. The other muscles either don’t produce wrist flexion with radial deviation or instead produce ulnar deviation or extension, so they don’t fit the action combination described.

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