What is the purpose of the little hairs inside the nose?
To fight disease.
They serve no purpose.
To keep dust out of the lungs.
To tickle the nose and cause sneezes.
Exchange of air occurs in _______ which are also known as 'air sacs'
Bronchi
Alveoli
Bronchioles
Alveolar ducts
Spirometer measures: A. Capacity of lungs B. Volume of air inhaled and exhaled C. Residual air D. All of these
A
B
C
D
Air can enter the body and travel to the lungs ...
through the mouth and the nose
through the oesophagus and gullet
through the windpipe and the pores
through the nose and the nervous system
What is the respiratory system?
The body's breathing system
The body's system of nerves
The body's food-processing system
The body's blood-transporting system
