Structure and Function of Muscles

Muscles that are not under your conscious control. Responsible for activities such as breathing, digesting food and your heart beating.

• skeletal muscles

• voluntary muscles

• involuntary muscles

A muscle that is attached to the bones of the skeleton by tendons and provides the force that moves the bones. Can be voluntary or involuntary.

• skeletal muscles

• smooth muscles

• cardiac muscles

Muscles that are under your control. Smiling, turning a page in a book and getting out of your chair are some examples.

• voluntary muscles

• involuntary muscles

Characteristics in these muscles: involuntary, does not get tired and controls heartbeats.

• skeletal muscles

• smooth muscles

• cardiac muscles

A muscle that is involuntary and found in walls of internal organs such as a stomach and intestines and bladder and blood vessels.

• smooth muscles

• cardiac muscles

• skeletal muscles

Which of the following is NOT a type of muscle?

• smooth

• cardiac

• skeletal

• rough

This tough band of connective tissue connects muscles to bones.

• cartilage

• joint

• ligament

• tendon

These muscles can move an arm or leg in a contracts and relaxes ways.

• smooth muscles

• cardiac muscles

• skeletal muscles

(Based on the picture in page 94) When a muscles contracts, it ....

• get longer

• get thinner

• get shorter

• get softer

Antagonistic muscles happen when ....

• the muscles work against each other

• the muscles work in synergy

• the muscles work independently

• the muscles work simultaneously