Oxyhemoglobin
Oxyhemoglobin
Oxyhemoglobin (pronounced: oxy-he-mo-glo-bin) is a form of hemoglobin that is combined with oxygen in the lungs. It is a bright red substance that is responsible for the red color of arterial blood.
Etymology
The term "oxyhemoglobin" is derived from three words: "oxy" from the Greek word "oxys" meaning sharp or acid, "heme" from the Greek word "haima" meaning blood, and "globin" from the Latin word "globus" meaning sphere.
Function
Oxyhemoglobin is formed during physiological respiration when oxygen binds to the heme component of hemoglobin in red blood cells. This process occurs in the lungs, and the oxyhemoglobin is then transported throughout the body in the blood, delivering oxygen to the body's tissues and organs.
Related Terms
- Hemoglobin: The protein molecule in red blood cells that carries oxygen from the lungs to the body's tissues and returns carbon dioxide from the tissues back to the lungs.
- Deoxyhemoglobin: The form of hemoglobin without oxygen, prevalent in venous blood.
- Carboxyhemoglobin: A compound of hemoglobin and carbon monoxide, which prevents normal oxygen uptake in the blood.
- Methemoglobin: A form of hemoglobin that contains ferric iron and cannot bind oxygen. It is produced in small amounts during normal oxygen transport.
External links
- Medical encyclopedia article on Oxyhemoglobin
- Wikipedia's article - Oxyhemoglobin
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