The human body is made up of ______ bones.

• 204

• 206

• 210

• 200

The smallest bones in the human body is located in the ____.

• toe

• hand

• finger

• ear

The largest bone in the human body is located in the upper ______.

• arm

• foot

• leg

• back

The skeleton is the _______ of the human body.

• structure

• organs

• nerves

• spinal cord

How many muscles are in the human body?

• about 400

• about 500

• about 600

• about 700

What are some things your muscles help you do?

• stand up

• move

• help you balance

What is an example of an involuntary muscle?

• heart

• thigh muscle

• brain

• fingers

The nervous system is made up of...

• brain, spine, and nerves

• brain, muscles, and nerves

• brain, heart, and nerves

• brain, spinal cord, and nerves

The central nervous system...

• includes the body's sensory organs.

• includes the involuntary actions of the body.

• includes the brain and the spinal cord.

The peripheral nervous system...

• includes the body's sensory organs.

• includes the involuntary actions of the body.

• includes the brain and the spinal cord.