Question

The given graph shows changes in the air pressure of the lungs during breathing. Observe the graph and explain what causes the change in air pressure during period X by selecting one of the options given below. Give a reason for your answer.n









A) Contraction of the diaphragm muscles

B) The decrease in the volume of the lungs

C) Movement of ribs downward and inward

D) Relaxation of the external intercostal muscles​

Answer 1

Answer:

hey mate ✌✌

option A.

contraction of the diaphragm muscles.

➡️ as we inhale , the diaphragm moves to downwards and the volume of air increases and as we exhale, the diaphragm moves upwards and the volume of air decreases.

➡️ thus,contraction of the diaphragm muscles are responsible for the change in volume during X.

Explanation:

hope it helps ✔✔

Answer 2

Explanation:

please mark me as a brainlist answer