What muscles were used to extend your arms backwards?

Which muscle were used to extend and splay your fingers outward?

The extensor digitorum is the muscle used to extend and splay fingers outward.

Which muscles extend or straighten the arms at the elbows?

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).

What muscles extend fingers?

The major extrinsic muscle which extends the fingers is extensor digitorum (ED), which has multiple compartments and separate tendons to each finger. Additional extrinsic extensor muscles are extensor indicis (EI) and extensor digiti minimi (EDM), which extend the index and little fingers, respectively.

What is the muscle on the backside of your arm?

Your triceps—the muscle along the back of your upper arm that helps you extend your elbow and straighten your arm—helps you do everything from pushing yourself up off the floor to placing an object on a high shelf, explains Lee Boyce, C.P.T., a strength coach based in Toronto.

What muscles extend the arm?

Triceps brachii: This muscle at the back of the upper arm extends the arm and stabilizes the elbow when the hand is used for fine movements.

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What muscles extend the wrist?

Extensor carpi radialis longus and brevis are inserted on the bases of the second and third metacarpals, extensor ulnaris on the base of the fifth metacarpal. When the wrist extensors act together, they extend the wrist. That’s an important part of the action we make when we go to grip something.

Which muscles extends to straighten or lengthen your leg?

Your quadriceps.

This muscle group consists of four muscles in the front of your thigh which are among the strongest and largest muscles in your body. They work to straighten or extend your leg.

What muscles extend the knee?

The one muscle that extends the knee is the massive quadriceps. We saw it briefly in the last section. We’ll take a better look at it now. The main flexors of the knee are the so-called hamstring muscles, semi-membranosus, semitendinosus, and biceps femoris.