Question

Write down one function of each of the following: [5]
(i) Alveoli.
(ii) Bronchioles.
(iii) Nasal chamber.
(iv) Skin.
(v) Skull​

Answer 1

Answer:

1) The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.

2)The bronchioles carry oxygen rich air into the lungs and carry carbon dioxide rich air out of the lungs, thereby aiding in the processes of breathing and respiration.

3)The nasal cavity is the inside of your nose. It is lined with a mucous membrane that helps keep your nose moist by making mucus so you won't get nosebleeds from a dry nose.

4) Provides a protective barrier against mechanical, thermal and physical injury and hazardous substances.

5) The main function of the bones of the skull along with the surrounded meninges, is to provide protection and structure. Protection to the brain (cerebellum, cerebrum, brainstem) and orbits of the eyes.

Explanation:

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Answer 2

1. Alveoli - its main function is to exchange Oxygen and carbon dioxide molecules to and from the bloodstream .

2. Bronchioles - its main function is it carries oxygen rich air into the lungs and carry carbon dioxide which air out of the lungs , thereby adding in the processes of breathing and respiration .

3. Nasal chamber - its main function is is it allow air to enter the respiratory system upon respiration .

4. Skin - its main function is it provides a protective barrier against mechanical , thermal and physical injury and hazardous substances .

5. Skull - its main function it protects to the brain and orbits of the eyes.