Respiratory pigment
Respiratory pigment
Respiratory pigment (/rɪˈspɪrətɔːri ˈpɪɡmənt/) is a type of biological pigment that is involved in the process of gas exchange. These pigments are responsible for transporting oxygen from the lungs to the different parts of the body.
Etymology
The term "respiratory pigment" is derived from the Latin words respirare meaning "to breathe" and pigmentum meaning "pigment".
Types of respiratory pigments
There are several types of respiratory pigments found in different organisms. These include:
- Hemoglobin - This is the most common type of respiratory pigment and is found in vertebrates and some invertebrates. It is responsible for the red color of blood.
- Hemocyanin - This pigment is found in some invertebrates such as mollusks and arthropods. It is blue in color when oxygenated.
- Hemerythrin - This pigment is found in some marine invertebrates and is violet-pink when oxygenated.
- Chlorocruorin - This pigment is found in some annelids and is green when oxygenated.
Related terms
- Gas exchange - The process by which oxygen is taken in and carbon dioxide is expelled out.
- Oxygen transport - The process of transporting oxygen from the lungs to the different parts of the body.
- Biological pigment - Substances produced by living organisms that have a color resulting from selective color absorption.
External links
- Medical encyclopedia article on Respiratory pigment
- Wikipedia's article - Respiratory pigment
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