In this article we’ll discuss the process of breathing and why it is so important for us.
To understand the cycle and concept of breathing, we should look at the definition of breathing firstly.
Breathing supplies oxygen to the lungs and eliminates carbon dioxide
We breathe air to survive, which contains oxygen, which is necessary for life
Air is enter and exit from lungs through the nose.
Firstly air is taken in through the nostrils. This is the first step of breathing
Inhaled air takes moisture from mucus and warmed from underlying blood vessels , and filtered from nose hair.
After moistened, warmed and filtered air travels through the mouth and nasal passages.
It then passes through the trachea, and trachea is the connection between the throat and the lungs.
Trachea is divided into two bronchi, air is passes through one of them.
After passing into the many bronchioles, it finally arrives into some of the millions of tiny sacs called alveoli.
This is where gas exchange takes place – oxygen passes out of the air into the blood, and carbon dioxide passes out of the blood into the air in the alveoli.
Below the lungs, there is a flat powerful muscle called diaphragm.
The diaphragm contracts and relaxes, and as it does so, the volume of the chest increases and decreases to suck air into the lungs and then force it out.
To be continue……