Respiratory System

Front

What is the name of the air sacs, where gas exchange takes place?

Back

Alveoli

Front

What is the name of the two narrower tubes branching from the trachea, that lead into the lungs?

Back

Bronchi

Front

What is the name of the large muscle that contracts and relaxes to move air in and out of the lungs?

Back

Diaphragm

Front

What is the name of the air tube, that is also known as the windpipe?

Back

Trachea

Front

What is the name of the small tubes leading to the alveoli?

Back

Bronchioles

Front

What sort of blood vessels are found covering the alveoli?

Back

Capillaries

Front

What is the name of the bones that provide protection to the lungs?

Back

Ribs

Front

What gas diffuses from the air, into the blood?

Back

Oxygen

Front

What gas diffuses out of the blood, after respiration?

Back

Carbon Dioxide

Front

What happens to the diaphragm when you breathe in?

Back

It contracts and moves down