1.3 Skeleton and movement IV B

What happens to your arm when you lift it up to your shoulder?

• Your triceps muscle contracts.

• Your biceps muscle contracts.

• Both muscles relax.

• Both muscles contract.

Which muscle helps you pull your lower arm towards your shoulder?

• Triceps

• Quadriceps

• Biceps

• Hamstrings

What happens to a muscle when it contracts?

• It gets longer.

• It gets shorter.

• It stays the same size.

• It disappears.

Tags

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What happens to a muscle when it relaxes?

• It gets shorter.

• It bunches up.

• It gets longer.

• It pulls harder.

What happens to your arm when you lower it back down?

• Your biceps muscle contracts.

• Your triceps muscle contracts.

• Both muscles contract.

• Both muscles relax.

When your triceps muscle contracts to straighten your arm, what does your biceps muscle do?

• It also contracts.

• It relaxes.

• It gets shorter.

• It pulls the arm up.

Tags

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How do the biceps and triceps muscles work together to move your arm?

• They both contract at the same time.

• They both relax at the same time.

• One contracts while the other relaxes.

• They push the bones.

What is the main job of muscles in your arm?

• To make your arm feel warm.

• To help your arm move.

• To hold your arm still.

• To make your arm grow.