The Respiratory System - JC Science (2)

Name the part of the breathing system represented by the tube labelled X.

Name the part of the breathing system represented by the balloons labelled Y.

Describe what happens to the balloons (Y) when the rubber sheet (diaphragm) is pulled down.

What part of the respiratory system does label A represent?

What part of the respiratory system does label B represent?

What part of the respiratory system does label C represent?

During gaseous exchange in the lungs, gas X leaves the blood vessel and enters an alveolus. At the same time, gas Y leaves the alveolus and enter the blood vessel.

Name gas Y.

A student exhaled air into test tube X. After a while, liquid A turned a cloudy white colour.

Name liquid A.

A student exhaled air into test tube X. After a while, liquid A turned a cloudy white colour.

Why did liquid A turn cloudy white in test tube X?

The diagram shows the structure of the human lung. Air passes in and out of the lungs, via the trachea, bronchi, and bronchioles. Gaseous exchange takes place in the structure labelled A.

Name structure A.