Question

Explain the role of diaphragm in breathing​

Answer 1

Answer:

The diaphragm, located below the lungs, is the major muscle of respiration. It is a large, dome-shaped muscle that contracts rhythmically and continually, and most of the time, involuntarily. Upon inhalation, the diaphragm contracts and flattens and the chest cavity enlarges. This contraction creates a vacuum, which pulls air into the lungs. Upon exhalation, the diaphragm relaxes and returns to its domelike shape, and air is forced out of the lungs.

Answer 2

Answer

$\bigstar$ Roles of Diaphragm :-

• The large muscular sheet forms the floor of the chest cavity, this is called as a diaphragm. During breathing the diaphragm involves the movement in itself and the whole ribcage.
• During inhalation, the ribs move up and outwards. As a result the diaphragm moves down. The use of this movement is that, it increases the space in our chest cavity and the air rushed into to lungs freely.
• As a result, the lungs get filled with the oxygen and other gases.
• During exhalation, the ribs move down and inwards, while the diaphragm moves up to its correct position. This reduces the size of the chest cavity and air is pushed out of the lungs.