Question

11. Observe the given figures as A and B and answer the following questions.

a. Among both figures identify whether A or B indicates the process of inhalation and which shows the process of exhalation?

Answer 1

Answer:

(a) Figure A indicates inhalation and figure 6 indicates exhalation. During inhalation, the ribs contract to move outward and upward, while during exhalation, the movement reverses, i.e. ribs relaxes to move inward and downward.

Answer 2

Answer:

Figure (a) indicates the process of inhalation, and figure (b) indicates the process of exhalation.

In figure (a), the volume of the lungs is increasing as the diaphragm is going down and ribs are moving out, this causes air from outside to move inside the lungs. This process is called inhalation.

In figure (b), the volume of the lungs is

decreasing as the diaphragm is going up

and ribs are moving inside, this causes air

from inside the lungs to move outside the

lungs. This process is called exhalation.