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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).
Wiki User
∙ 11y ago
Wiki User
∙ 11y agoIf you mean the elbow, the prime mover at the elbow (main muscle) to extend (straighten) it is the triceps.
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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.
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
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
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 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.
Which muscles extend or straighten a body part?
Extensor muscles extend or straighten a body part.
