Question

Explain the mechanism of breathing in humans.​

Answer 1

Mechanism of Breathing:

Exchange of gases takes place before respiration process. It takes place between the atmosphere and our nostrils. The oxygen rich air is taken and Carbon dioxide is released.

• The two process involved in breathing process is known as Inspiration and Expiration.

So, let's know the basic points to be noted within Inspiration and Expiration.

✏️ INSPIRATION:

• At the time of inspiration, the diaphragm contracts and move down to let in the air.
• Diaphragm becomes flat and move down towards the abdominal cavity.
• Along with this, intercoastal muscles also contract.
• Ribs move outwards and the all total volume of thoracic cavity increases.
• When air enter, pressure decreases and lungs expand.
• It is an active process and takes 1-2 minutes.

✏️ EXPIRATION:

• The diaphragm relaxes and moves upwards (Curved upwards).
• The intercoastal muscles relaxes.
• The ribs moves inwards and all total volume of thoracic cavity decreases.
• Air rushes out from the lungs and lungs relax.
• It is a passive process$.$

And we are done !!

Answer 2

Mechanism of Breathing:

Exchange of gases takes place before respiration process. It takes place between the atmosphere and our nostrils. The oxygen rich air is taken and Carbon dioxide is released.

The two process involved in breathing process is known as Inspiration and Expiration.

So, let's know the basic points to be noted within Inspiration and Expiration.

✏️ INSPIRATION:

At the time of inspiration, the diaphragm contracts and move down to let in the air.

Diaphragm becomes flat and move down towards the abdominal cavity.

Along with this, intercoastal muscles also contract.

Ribs move outwards and the all total volume of thoracic cavity increases.

When air enter, pressure decreases and lungs expand.

It is an active process and takes 1-2 minutes.

✏️ EXPIRATION:

The diaphragm relaxes and moves upwards (Curved upwards).

The intercoastal muscles relaxes.

The ribs moves inwards and all total volume of thoracic cavity decreases.

Air rushes out from the lungs and lungs relax.

It is a passive process..

And we are done !!

hope it helps ❣️❣️❣️