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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.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoYour triceps contracts and the biceps lengthens when you straighten your arm.
Extensor is the muscle which contracts to straighten a limb.
Wiki User
∙ 13y agothe bicep tightens and the triceps loosens
Wiki User
∙ 11y agotriceps
Wiki User
∙ 11y agoTricep, the bicep is relaxed
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What happens to muscles when you straighten your arm?
There are many arm muscles. The triceps (on the back of your upper-arm) contract when you straighten your arm, and the biceps (the front of the upper-arm) relaxes.
Which muscles straighten the arm?
no it isnt because the arm is bent by the flexor muscles (mostly just the biceps), and straightened by the extensor muscles (ie. the triceps).
What do the triceps and biceps muscles do?
The triceps muscles extend (straighten) the arm, while the biceps muscles flex (bend) it at the elbow joint.
What muscle causes a joint to straighten when it contracts?
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.
Which muscles will shorten to straighten the arm?
looking at the arms, it's the triceps and some portions of the deltoid.
Describe the action of your muscles when you bend your arm and then straighten it again?
The muscles in your arm never expand; so when you bend your arm, your biceps contract as your triceps return to their regular form. When you extend your arm, you triceps contract as your biceps return to their regular form.
What happens to the bleeps when you straighten your arm?
what happen to the bleeps when you straighten your arm
How do muscles work with bones to straighten the bent arm?
Well remember that the musleoves the bone one way and that one way is the bent
What will happen if only 1 muscle is used to bend and straighten the arm?
Two muscles are needed, one to extend the other to close
What are the muscles in the upper arm that cause it to straighten?
Tricep brachii is responsible for extension (straightening) of the arm at the elbow. There are 3 heads of the Tricep; the long, lateral and medial heads. The Tricep is an antagonist of the bicep and brachialis muscles of the upper arm, which both assist in flexion at the elbow joint.
Why do you need two muscles to straighten your arm?
The biceps flexes the arm it does not extend it (straightens). The triceps brachii extends the arm. They do work together. If one is damaged and doesn't work as it should, the movement will be "jerky" and not smooth.
What is the opposing muscle of the bicep?
bicep- it bends the arm while the triceps straighten the arm.
