The Breathing System

Question 1

Trachea

Answer 1

The windpipe - it leads from the nose to the mouth to the bronchi. It adapts by its function by having rings of cartilage to keep it open.

Question 2

Bronchus

Answer 2

A tube leading from the trachea to a lung.

Question 3

Lungs

Answer 3

They contain gas exchange surfaces.

Question 4

Bronchiole

Answer 4

Smaller tubes leading inside the lungs leading from the bronchus to the alveoli.

Question 5

Alveoli

Answer 5

Tiny air sacs at the end of bronchioles, where gas exchange happens.

Question 6

Ribs/ Ribcage

Answer 6

Provides a moveable cage to enclose and protect the lungs.

Question 7

Muscles/Intercostal muscles

Answer 7

Allow the ribcage to change in volume for ventilation to happen.

Question 8

Diaphragm

Answer 8

Works with the intercostal muscles to allow ventilation to happen. It contracts to let air in and then relaxes to let air out.

Question 9

Heart

Answer 9

It interacts with the respiratory system. The whole oxygen transports system works in a cycle. This de-oxygenated blood is pumped back to the heart then on to the lungs.