Question

What is the difference between expiration and inspiration?​

Answer 1

$\Large \bf \underline \orange{Answer}$

• Inspiration is the process that causes air to enter the lungs, and expiration is the process that causes air to leave the lungs .

• A respiratory cycle is one sequence of inspiration and expiration.Expiration is shorter and there is no pause between inspiration and expiration.

• Inspiration is an active process whereas expiration is a passive process.

Answer 2

Answer:

Inspiration is the process that causes air to enter the lungs, and expiration is the process that causes air to leave the lungs.

Explanation:

INSPIRATION:

a)The act of drawing air into the lungs.

b)Rib cages move forward and upward.

c) Contraction of external intercostals muscles and relaxations and internal intercostals muscles occur.

d) Increase in volume of the thoracic cavity.

e)Diaphragm contracts and becomes flattened.

f)Increase in volume of the thoracic cavity.

g) Air pressure in lungs is less than atmospheric pressure.

EXPIRATION.

a)Expulsion of air from the lungs.

b)Rib cages move downward and inward.

c)Relaxations of external intercostals muscles and Contraction of internal intercostals muscles occur

e) Diaphragm relaxes and becomes original dome-shaped.

f) The decrease in the volume of the thoracic cavity.

g) Air pressure in lungs is higher than atmospheric pressure.