Skeletal System
Muscular System
Nervous System
100

What is the function of the skeletal system?

To give your body shape or help you stand.

100

What do muscles do?

Make you strong or help you move.

100

What is the function of the nervous system?

To send messages from your brain to other parts of your body.

200

How many bones are in your body?

206

200

About how many muscles do you have in your body?

About 650

200

About how many nerves do you have in your body?

About a billion

300
What material are bones made of?

Calcium

300

Which type of muscles do you control by thinking about making them move?

Voluntary muscles

300

Nerves help you use your senses. Name all 5 senses.

Sight, touch, taste, smell, hear

400

What is inside bones that makes red blood cells?

bone marrow

400

Which muscles work automatically without even thinking about it?

Involuntary Muscles

400

What is the doctor testing when she taps your knee with a rubber tool?

Your reflexes

500
What is it called where two bones meet?

Joint

500

About how much of your weight comes from muscles?

About half

500

What are the highways that nerves send their messages on called?

Dendrites

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