IGCSE Topic 6 - The Respiratory System

Which route is taken by air passing

into the lungs of a human?

• alveolus => bronchiole => bronchus => trachea

• bronchus => trachea => alveolus => bronchiole

• bronchiole => alveolus => bronchus => trachea

• trachea => bronchus => bronchiole => alveolus

Between which structures are

the pleural membranes found?

• Bronchi and bronchioles

• Diaphragm and ribs

• Larynx and trachea

• Lungs and intercostal muscles

The diagram shows structures

in the throat of a mammal.

What is structure X?

• Epiglottis

• Larynx

• Oesophagus

• Trachea

The diagram shows some cells from

the lining of the trachea (windpipe)

in the respiratory tract. What is the

function of the structures labeled X?

• Filtering dirt from passing air

• Making mucus

• Moving mucus to the throat

• Moving carbon dioxide out of the lungs

The diagram shows part of the

lining of the trachea. What is X?

• Cartilage

• Goblet cell

• Cell in the alveolus

• Cilium

The diagram shows a section through

the human thorax. Which structure

contains goblet cells and cilia?

• A

• B

• C

• D

Which of the following is NOT a

function of the respiratory system?

• Warming the air

• Pumping blood to the organs

• Exchanging oxygen and carbon dioxide

• Creating sound using vocal cords

Where in the lungs does

gas exchange occur?

• Bronchi

• Diaphragm

• Alveoli

• Nose and mouth

Which tube carries air to the

left and right bronchi?

• Oesophagus

• Alveolus

• Bronchiole

• Trachea

Which structures in the respiratory

system contain cartilage?

• Trachea, bronchi and bronchioles

• Trachea and bronchioles only

• Trachea and bronchi only

• Trachea only