Can muscles only extend

Anonymous

∙ 15y ago

Updated: 8/17/2019

No, they can also contract, they do every time you use them to move an arm, a leg, etc..

Wiki User

∙ 15y ago

What else can I help you with?

Which muscles extend or straighten a body part?

Extensor muscles extend or straighten a body part.

Can muscle cells extend?

only contract, never extend. if it looks like it is extending, that's just another muscles contraction.

Is their only one muscle that bends and straitens the arm?

There are several muscles involved in bending the arm, and several others used to extend the arm. Muscles can only PULL; they cannot push or twist.

What muscle can do?

Muscles can contract and shorten

What muscles extend flex the arm?

i done no

Which muscles extend your elbow?

triceps brachii

What muscles extend the spine?

The erector spinae

What is it called when muscles are pulled?

Hyper extend

Group of muscles that extend the leg?

There are four muscles that extend the leg. vastus lateralis, vastus medialis, vastus intermedius and rectus femoris.

What Muscle extends in any movement?

None. Muscles only contracts. In order to extend, the muscle on the opposite movement has to contract. For example, the biceps help flex the elbow, but it does not extend the elbow; the triceps does that.

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 group of muscles allows you to extend your arm?

Triceps

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