Question

define breathing and explain the mechanism of breathing in human beings. ​

Answer 1

Answer:

The process of taking air into and expelling it from the lungs is calledbreathing. The action of breathing in and out is due to changes of pressure within the thorax, in comparison with the outside.When we inhale the intercostal muscles (between the ribs) and diaphragm contract to expand the chest cavity.It is a voluntary process

the process of taking in oxygen using our nose is called breathing. It can be controlled by us

Breathing (or ventilation) is the process of moving air into and out of the lungs to facilitate gas exchange with the internal environment, mostly by bringing in oxygen and flushing out carbon dioxide.

Answer 2

The process of taking air into and expelling it from lungs is called breathing . the action of breathing in. and out is due to change of pressure within the thorax ,in comparison with the outside. when we inland the intercostal muscles ,( between the ribs ) and diaphragm contract to explained the chest cavity