Question

Inhalation occur when:
a) Diaphragm moves down
b) Diaphragm moves up
c) Ribs moves out
d) Ribs moves in​

Answer 1

Answer:

b) Diaphragm moves up

Explanation:

As the volume of thoracic cavity increases, volume of intrapulmonary cavity increases and intrapulmonary pressure decreases than atmospheric pressure. Thus, inspiration occurs. So in inspiration,the ribs move up and outward and the diaphragm moves down. ... Ribs move down and inward, diaphragm moves up

Answer 2

Explanation:

ribs moves out and diaphragm moves up