Muscles and Skin

The skin serves as a protective shield against heat, light, injury, and infection.

• True

• False

The outside covering of your body.  It is the largest organ?

• skin
• nerves
• blood
• small intestine

How does sweat on the skin help the body?

• Sweat stops sunburn.
• Sweat cools the body.
• Sweat feeds the skin.
• Sweat heals cuts.

Ella waves good-bye from the bus. What body system pulls on bones to let Ella wave her arm?

• muscular system
• nervous system
• digestive system
• circulatory system

Which system in your body has the main job of moving your body?

• the respiratory system
• the muscular system
• the digestive system
• the circulatory system

Which activity does not use muscles?

• digesting an apple
• remembering a name
• jumping rope
• breathing air

What organ has these jobs: cools the body, keeps germs out, and senses temperature?

• skin
• eye
• blood
• brain

What is the top layer of skin called?

• callus

• epidermis

• dermis

• hypodermis

True or False: The brain is the largest organ in the body.

• True

• False

Skin release sweat to regulate body __________.

• speed

• energy

• weight

• temperature