5.5 THE LUNGS & GAS EXCHANGE

Question 1

What are the functions of mouth and nose?

Answer 1

Makes the air warm and the hairs and mucus in the nose trap microorganisms

Question 2

What are the functions of trachea?

Answer 2

The tube carrying air from nose down into your chest and has rubbery cartilage rings around it.

Question 3

What are the functions of bronchus?

Answer 3

Tube branches from trachea that carries air deep into lung tissue and has ciliated cells lining it that removes dust and harmful microorganisms from the air.

Question 4

What are the functions of alveolus?

Answer 4

Tiny air sacs at the end of the tubes adapted for gas exchange.

Question 5

What are the functions of pleura?

Answer 5

Slippery membranes that surround the lungs and make it easier to breathe.

Question 6

What are the functions of diaphragm?

Answer 6

A sheet of muscle that divides the chest from other organs and helps move air in and out of the lungs when you breathe.

Question 7

The oxygen needed by the cells for aerobic respiration is brought into your body by the _______________

Answer 7

respiratory system

Question 8

Respiratory system removes the ___________ produced during respiration.

Answer 8

carbon dioxide

Question 9

_____ is moved in and out of your lungs.

Answer 9

Air

Question 10

Where does gas exchange take place?

Answer 10

The lungs

Question 11

Your body exchanges _____ from the air for _________ from your blood

Answer 11

oxygen ; carbon dioxide