Skeletal System
Digestive System
Respiratory System
Circulatory System
100

This part of the skeleton is composed of several bones and protects the brain.

skull

100

These structures, also part of the skeletal system, crush that has entered the mouth.

teeth

100

These balloon like sacs that inflate and deflate, bringing air into and out of the body.

lungs

100

The blood vessels that carry oxygen-rich blood to the body.

Arteries

200

The name of your back bone

Spine

200

Food travels down this long tube from the mouth to the stomach.

Esophogus

200

This chemical is in the air we breathe and we need it to survive.

Oxygen

200

These disc shaped cells transport oxygen from the lungs to the other parts of the body.

red blood cells

300

The leg bone which connects to the hip.

Femur

300

The part of the digestive system where nutrients are absorbed into the body.

Small Intestine

300

This chemical is exhaled by animals, but plants "breathe" it in and use it to produce oxygen.

Carbon dioxide

300

The chamber in the heart that pushes blood out of the heart and to the other parts of the body.

Ventricle

400

These bones protect your heart and lungs.

Ribs

400

The part of the digestive system where water is water is absorbed and waste is made.

Large Intestine

400

A disease in the lungs caused by breathing in harmful chemicals.

Emphysema (or lung cancer)

400

The tiny blood vessels where nutrients and waste are exchanged through the walls of the blood vessels.

Capillaries

500

The internal, and spongy, portion of the bone that produces blood cells.

Marrow

500

Double Jeopardy: This chemical aids in digestion by speeding up chemical reactions.

Enzyme 

500

Small sacks in the lungs which allow oxygen and carbon dioxide to move between the lungs and blood stream.

Alveoli

500

Double Jeopardy: These blood cells are a vital part of the body's immune system.

White blood cells

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