When you straighten your arm your bicep is relaxed and your tricep is contracted.
In pairs, for the upper arm, it uses the biceps and the triceps to extend and contract.
Extend the arm would contract the triceps and relax the biceps.
ginger
Bicep
The bicep muscle. The tricep contracts to straighten the arm as the bicep relaxes.
The muscle that causes a joint to straighten when it contracts are the extensor muscles. These include the triceps that work with the biceps to extend the arm.
When you bend your elbow, the biceps muscle contracts. At the same time the antagonist muscle, that is the triceps muscle relaxes in synchronized manner. Vise verse action take place, when you straighten the arm at the elbow. Triceps contracts and biceps relaxes.
The Biceps brachii muscle. We just call it the biceps, though. (Pronounced bye-seps) To straighten the arm again, the triceps muscle is contracted - which lies 'underneath' the upper arm.
When lowering arm biceps relax and triceps contracts. When one contracts the other relaxes when you move it forward and downward.
The triceps are responsible for straighting and the bicep is for curling muscle.
The tricep contracts and the bicep relaxes.
The muscle in your arm contracts. The muscle on the other side of your arm, opposite from the side that you are flexing, stretches.
Straightening your arm at the elbow is called extension. Elbow extension is caused primarily by contracting the triceps brachii muscle, although the small anconeus muscle does play a role. Wrist extension is accomplished primarily by contracting the extensor carpi radialis & the extensor carpi ulnaris; but is also assisted by contracting the extensor digitorum, the extensor indicis, the extensor digiti minimi, the extensor pollicis brevis, & the extensor pollicis longus.
Skeletal muscles are arranged as opposing pairs because, although they can shorten themselves by contracting, they have to be stretched back to their former length by other muscles. An example of opposing muscles is in the arm, where the biceps and triceps have opposite actions. As one muscle shortens, the other is stretched. The biceps contracts to bend the arm at the elbow while the triceps stretches. To straighten the elbow joint, the triceps contracts, while the biceps stretches.
it contracts
The triceps is the muscle at the back of your upper arm. It works to straighten your arm at the elbow.Yes, the tricep is located on the back of your arm in between your elbow and shoulder, closer to your shoulder though.