Deoxygenated blood
Deoxygenated Blood
Deoxygenated blood (pronunciation: dee-ox-i-gen-at-ed bluhd) is a term used in anatomy and physiology to describe blood that has a low concentration of oxygen.
Etymology
The term "deoxygenated" is derived from the prefix "de-" meaning "removal" or "loss of", and "oxygenated" which refers to the process of adding oxygen. Thus, deoxygenated blood refers to blood that has lost its oxygen content.
Definition
Deoxygenated blood is blood that has circulated through the body, delivering its oxygen content to the body's cells, tissues, and organs. It is then returned to the heart via the veins, before being pumped to the lungs for reoxygenation.
Characteristics
Deoxygenated blood is often described as being dark red or purple in color, due to the presence of hemoglobin, a protein in red blood cells that binds with oxygen. When hemoglobin is not bound to oxygen, it changes shape and reflects light differently, giving deoxygenated blood its distinctive color.
Related Terms
- Oxygenated blood: Blood that is rich in oxygen, typically bright red in color.
- Hemoglobin: A protein in red blood cells that binds with oxygen.
- Veins: Blood vessels that carry deoxygenated blood back to the heart.
- Arteries: Blood vessels that carry oxygenated blood from the heart to the rest of the body.
See Also
External links
- Medical encyclopedia article on Deoxygenated blood
- Wikipedia's article - Deoxygenated blood
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