The Respiratory System

Question 1

Function of the respiratory system

Answer 1

Bring air from the atmosphere into the lungs
Transfer oxygen into the blood
Remove carbon dioxide from the blood
Expel heat and water vapour in the air breathed out
Allow the vocal cords to create speech as air is breathed out

Question 2

Nasal cavity function

Answer 2

Warms and filters air

Question 3

Pharynx function

Answer 3

The ‘throat’ which allows food and air to pass. Air is channeled into the larynx

Question 4

Larynx function

Answer 4

The ‘voice box’. Air passes through the larynx on its way to the trachea. The vocal cords and in the larynx

Question 5

Trachea function

Answer 5

The airway through which the air passes on its way to the bronchi

Question 6

Bronchi function

Answer 6

The trachea branches into two bronchi, one for each lung

Question 7

Bronchioles function

Answer 7

The bronchi divide into smaller bronchioles, which divide into even smaller bronchioles and so on until the terminal bronchioles are reached

Question 8

Terminal bronchioles function

Answer 8

The terminal bronchioles branch again to form respiratory bronchioles, which also branch to form alveoli or air sacs

Question 9

Alveoli function

Answer 9

Microscopic air sacs at the end of the respiratory bronchioles. Each one is surrounded by capillaries, which is where gas exchange occurs

Question 10

What are the mechanics of breathing

Answer 10

Inspiration - breathe in

Expiration - breathe out

Question 11

Inspiration - breathing in

Answer 11

Is initiated by the diaphragm