Question

Explain the mechanism of breathing

Answer 1

Hi friend

Here's ur answer

While Breathing:

When we inhale the intercostal muscles (between the ribs) and diaphragm get contracted to expand the chest cavity. The diaphragm flattens and moves downwards and the intercostal muscles move the rib cage upwards and out. This increase in size decreases the internal air pressure and so air from the outside (at a now higher pressure that inside the thorax) rushes into the lungs to equalise the pressures.

While Exhaling:

When we exhale the diaphragm and intercostal muscles relax and return to their initial resting positions. This reduces the size of the thoracic cavity, which results in increasing the pressure and forcing the air out of the lungs.

You can refer to the attachment for getting a pictorial representation of it .

Hope it helps

Answer 2

Hey mate
Your answer is ____________________

The mechanism of breathing : When we inhale the intercostol muscles and diaphragm contact to expand the chest cavity. The diaphragm flalltens and and moves downward and intercostol muscles move the rib cage upwards and out. The increase in size and decreases internal air pressure and so air from outside rushes into lungs to equalize the pressure.
May it is hopeful for you
plz mark as brillest answer.