Question

The _____________________ is the muscle in your arm that straightens your fingers.

Femur

bicep

trapezius

Extensor Digitorum

Answer 1

Several muscle groups cross over the elbow joint. The muscles involved in flexion (bending) the elbow are the biceps brachii, brachioradialis and the brachialis. The triceps are responsible for elbow extension (straightening the arm).

Step-by-step explanation: