I WONDER - How Do The Lungs Work?

The video explains the process of breathing, focusing on the role of alveoli in the lungs. It describes how alveoli fill with air, allowing oxygen to enter the bloodstream. Red blood cells then transport this oxygen to various parts of the body. The expansion of alveoli is what causes the lungs to expand during inhalation.

What happens to the air you breathe in?

• It goes directly to the brain.

• It is expelled immediately.

• It fills up the alveoli.

• It stays in the throat.

Approximately how many alveoli are present in the human lungs?

• 1 billion

• 200 million

• 600 million

• 100 million

What is the primary function of alveoli?

• To store carbon dioxide.

• To bring oxygen into the bloodstream.

• To produce red blood cells.

• To filter out dust particles.

How do red blood cells interact with oxygen?

• They dissolve it in the stomach.

• They convert it into carbon dioxide.

• They carry it to the brain only.

• They transport it to where the body needs it.

What causes the lungs to expand during breathing?

• The contraction of the diaphragm.

• The filling of alveoli with air.

• The movement of the rib cage.

• The increase in blood pressure.