Respiratory System

All living organisms including humans breathe. Our body needs energy for many activities 24 hours a day. This energy is used inside the cells during breathing. It uses oxygen to disintegrate glucose from food.

Parts of Respiratory System

All the organs (nose, lungs) exchange blood and atmospheric air in between themselves. All these make respiratory system. All these organs in sequence are:

1. Nose

Air outside from the world enters our body through two nostrils or nose holes. The three characteristics of nose are:

  1. The hair inside the nose stops dust from air entering our body.
  2. A sticky element (shesleshma) excreted from nose sticks itself with virus and bacteria and other particles and stops them from entering body.
  3. Air going through nostrils keeps the temperature of body warm and moisture.

2. Food Pipe

This is the back part of our mouth which takes air inside and food intake by our mouth is same. The bottom part of pipe is Larynx which opens in vocal cords which opens in breathing pipe.

3. Respiration Pipe

This is a straight pipe going to the centre of chest starting from vocal cords. There are cartilages (spiral in shape) in its walls which does not make it sticky.

Breathing cells and veins

Breathing pipe is divided in two parts - from back of head which is called swahashnitan, (breathing centre). Both the cells enter lungs from their sides. They get divided into small branches inside lungs which is called shawahansikayen (breathing cells). 

Air passage (vayukosh) 

Breathing cells are opened in the end point of closed air passage. These are lakhs in number. They have a large surface so that they can exchange respiratory gases more and more. Those people who smoke cigarette have many side effects on their air passage. It gets closed and they suffer from respiratory diseases.


These are a pair of sponge bag like structure which are close to the walls of chest. Blood having more carbon dioxide and less oxygen reach lungs. Many minute branches of blood cells cover air passage and they became blood veins (lung veins) after many movements. These lung vein join together to form a primary lung veins which reaches heart. Blood reaching heart from lungs is full of oxygen.