Question

Differentiate between Inspiration and Expiration with respect to position of diaphragm and working of intercostal muscles.

Answer 1

Sr. No.	Point of distinction	Inspiration	Expiration
1.	Position of the diaphragm	The diaphragm contracts, flattens, and lowers during inspiration.	The diaphragm relaxes, takes on the shape of a dome, and pushes upward during expiration.
2.	Working of the intercostal muscle	The sternum and ribs move outward and upward, while the external intercostal muscles tense.	The intercostal muscles relax, and the rib cage lowers and moves inward.