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- 1. Multiple Choice
It is also known as the windpipe which carries air from the throat into the lungs.
trachea
pharynx
bronchi
larynx
- 2. Multiple Choice
It serves as passage of both air and food.
pharynx
larynx
epiglottis
nasal cavity
- 3. Multiple Choice
What is the main function of the respiratory system?
excretion of carbon dioxide
gaseous exchange
oxygenation of blood
secretion of hormones
- 4. Multiple Choice
These are tiny sacs of lung tissue specialized for the movement of gases between air and blood.
alveoli
bronchi
bronchioles
coarse hairs
- 5. Multiple Choice
It is the passage that directs air into the lungs.
bronchi
bronchioles
alveoli
trachea
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