The bicep flexes the arm at the elbow.
Pectoralis major and coracobrachialis
The triceps muscles extend (straighten) the arm, while the biceps muscles flex (bend) it at the elbow joint.
The biceps are the muscles on your arm which bend your elbow. Ask someone to flex their arm, and they will 99 percent of the time show you their Bicep.
When you straighten your arm or leg (as in a pushing movement), you EXTEND the arm or leg. When you bend your arm at the elbow or your leg at the knee, you FLEX the arm at the elbow and flex the leg at the knee.
It help you move you arm to let it flex!
brechioradialis
When flexing your arm you would use shoulder muscles, mainly the deltoids and pectoralis major. If you flex your elbow (which most people think means flexing your arm, but is really the forearm), then you would use your biceps, brachialis. and brachioradialis muscles, which would be three muscles, depending on the orientation of the forearm.
flexing is tightening of your muscles, and joints bend to let you extend your arm from the elbow and shoulder
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Function: flexion and radial deviation of the wrist, along with other muscles which flex the wrist and radially deviate the wrist, weak pronation of the forearm along with other muscles which pronate the forearm and weak flexion of the elbow along with other muscles which flex the elbow
The function of the biceps brachii is to flex your arm at the elbow. However, even though that is the most visible muscle, the brachialis muscle is considered the prime mover in flexing at the elbow.
Muscles within the brachium are responsible for the extension of the elbow. These muscles also work for the flexing of the arm as well.
brachialis,brachioradialis, triceps brachil