Health Unit 1 Test

Front

Cell wastes containing nitrogen are produced when cells break down: oxygen, sugar, protein, carbon dioxide

Back

protein

Front

About one-fifth of the air you breathe is a gas called

Back

oxygen

Front

Inside the body, the trachea divides into two: air sacs, nostrils, muscles, bronchial tubes

Back

bronchial tubes

Front

Air that has just been inhaled is still rich in

Back

oxygen

Front

The exchange of carbon dioxide for oxygen takes place in the

Back

air sacs

Front

The large muscle that contracts to bring air into the lungs is called the

Back

diaphragm

Front

After red blood cells release their ______, they flow back to the heart through the veins

Back

oxygen

Front

When cells use oxygen to release energy from sugar, they produce __________.

Back

carbon dioxide

Front

To stay alive, almost all living things need oxygen and _____

Back

food

Front

When red blood cells are carrying oxygen, what is their color?

Back

bright red