The video explains the role of the human nose in filtering air. It highlights how mucus and nose hairs work together to trap pollen, bacteria, germs, and dust, preventing them from reaching the lungs and causing disease. The more hairs present in the nose, the better it can protect the body, contributing to overall health.

What makes the human nose an effective air filter?

• The size of the nostrils

• The shape of the nose

• The color of the mucus

• The presence of mucus and nasal hairs

What happens to the air when you inhale?

• It is directly absorbed into the lungs

• It is cooled down

• It is filtered by nasal hairs covered with mucus

• It bypasses the nasal hairs

Which of the following is NOT filtered by the nose?

• Bacteria

• Dust

• Water vapor

• Pollen

Why is it beneficial to have more nasal hairs?

• They provide better filtration of harmful particles

• They help in cooling the air

• They improve the appearance of the nose

• They enhance the sense of smell

What can happen if the air we breathe is not properly filtered?

• It can enhance oxygen absorption

• It can cause lung irritation and diseases

• It can improve lung capacity

• It can lead to better respiratory health