What is the role of Respiratory Pigment in Respiration? Give one example.

Diffusion pressure alone cannot take care of oxygen delivery to all body parts in large sized animals because if diffusion were to move oxygen in our body, then it is estimated that it would take 3 years for a molecule of oxygen to get to our toes from our lungs. 

The Respiratory pigments take up oxygen from the air in the lungs and carry it to tissues.

What is Respiratory Pigment?

A Respiratory Pigment is any molecule that increases the oxygen carrying capacity of blood.

In humans and many animals, the most common respiratory pigment is a protein called Hemoglobin.

Also Check- Respiration in Human Beings 

Role of Respiratory Pigment in Respiration

Role of Respiratory Pigment in Respiration

  • Respiratory pigments take up oxygen from the lungs and carry it to the tissues, which are deficient in oxygen.
  • Respiratory pigments also pick up carbon dioxide from our tissues and bring it to  Lungs.
  • Hemoglobin is one such respiratory pigment found  in the Red Blood Cells (RBCs) of human beings

Also Check – Human Respiratory System Diagram

Hemoglobin has a very high affinity for oxygen.

CO₂ being more soluble in water than O₂ is mostly transported in the dissolved form in our blood. Haemoglobin shows more affinity to carbon monoxide than oxygen.

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