Why Do We Need Lungs

Q. When the volume inside the lungs increases, the intrapulmonary pressure.

1. decreases
2. increases
3. equalises

Q.

Which of the following statements about expiration is correct?

1. It occurs when the intra-pulmonary pressure is lower than the atmospheric pressure

2. During this process, the volume of the thoracic chamber increases

3. During this process, the pulmonary volume increases

4. It occurs when the intra-pulmonary pressure is higher than the atmospheric pressure

Q.

What happens to intrapulmonary pressure during inhalation?

1. Decreases

2. Increases

3. Remains constant.

4. Cannot be determined.

Q.

The volume of lungs is directly related to intrapulmonary pressure. When volume increases, pressure also increases.

1. True

2. False