Question

state the role of diagram and rib muscles in breathing

Answer 1

Diaphragm's role in breathing. when the diaphragm contracts and moves lower, the chest cavity enlarges, reducing the pressure inside the lungs. To equalize the pressure, air enters the lungs. When the diaphragm relaxes and moves back up, the elasticity of the lungs and chest wall pushes air out of the lungs.

Ribs role in breathing,With each inhalation, the diaphragm expands the chest, allowing the lungs to take in air. The ribs and intercostalmuscles support breathing by helping the chest cavity expand and contract. The ribcage protects the lungs and heart as well.

Answer 2

when we inhale the air our ribs moves upward and outwards as muscle in rib cage contract. at the same time the diaphragm becomes flat and moved down ward.
when we exhale the air diaphragm muscle relaxers and moved upwards and ribs moves downwards.

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