The ______ system includes the muscles in your body giving it its movement.

• skeletal
• cardiac

• circulatory
• muscular

Any movement of your body is caused by ______.

• bones

• muscles

• nerves

Muscles that work automatically are ______ muscles.

• auditory

• voluntary

• involuntary

Muscles that move when you want them to are ______ muscles.

• voluntary

• involuntary

• digestive

Muscles that form the heart are ______ muscles.

• voluntary

• cardiac
• auditory

Cardiac muscles form the​ (a)   .

• heart
• lungs
• eyes

The part of the tooth that can be seen is called the ______.

• crown

• root

• dentin

The organs that work together to make foods usable to your body are in the ​ (a)   .

• digestive system
• muscular system
• skeletal system

Label the parts of the digestive system.

a

b

c

Intestines

Stomach

Esophagus

The system of bones that makes blood cells and stores minerals is the ​ (a)   .

• skeletal system
• digestive system
• muscular system