Explain macnezum of respiration in human

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Explain macnezum of respiration in human

Posted by Himesh Patidar 4 years, 11 months ago

CBSE > Class 10 > Science

1 answers

Yogita Ingle 4 years, 11 months ago

Mechanism of respiration involves the breathing mechanism and exchange of gases.

The gaseous exchange occurs by diffusion in the alveoli. It depends upon the pressure differences between blood and tissues, or atmospheric air and blood. The exchange of gases takes place at the surface of the alveolus.

The mechanism of breathing has already been explained above. Let us have a look at the steps involved in the exchange of gases.

Exchange of Gases

The exchange of gases takes place in the following manner:

Transport Of Oxygen

Oxygen in the blood is carried to the tissue in two forms- Oxyhaemoglobin- chemical composition of oxygen with haemoglobin, and solution of oxygen in the blood plasma.
The oxygen in the blood combines with haemoglobin when the concentration of oxygen is high in the blood.
Oxyhemoglobin, being unstable, dissociates to release oxygen. Low oxygen, low pH and high temperatures stimulate the dissociation process.

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CBSE > Class 10 > Science