Topic: Food Energy and Respiration Subtopic: Introduction
How does air enter our lungs?
Answer: When we exhale, there is a pressure difference inside and outside of the lungs. To maintain that pressure air enters the lungs.
- What is cough?
- What is job of plasma?
- What is sequence of transport of food?
- What happens when atria are full of blood?
- What is vascular bundle?
- Why we should not breathe through mouth?