BLOOD PIGMENT Meaning and
Definition
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Blood pigment refers to any substance found in the blood that imparts coloration to it. These pigments are responsible for the various shades of red seen in blood and play crucial roles in its physiological functions.
One of the key blood pigments is hemoglobin, which is found within red blood cells. Hemoglobin contains iron, which gives blood its characteristic red color. It is responsible for the transportation of oxygen from the lungs to tissues throughout the body. When oxygen binds to hemoglobin, it forms oxyhemoglobin, which appears bright red. When it releases oxygen, it becomes deoxyhemoglobin, resulting in a darker, bluish-red hue.
Another significant blood pigment is myoglobin, found in muscle tissues. Myoglobin is essential in storing and releasing oxygen within muscle cells, facilitating the supply of oxygen during physical activity. It also contributes to the reddish color of meat.
Bilirubin is a yellowish-red blood pigment derived from the breakdown of hemoglobin. It is produced by the liver and excreted in bile. Elevated levels of bilirubin can result in jaundice, causing yellowing of the skin and eyes.
These blood pigments allow for the vital functions of oxygen transport and storage, ensuring the proper functioning of tissues and organs in the human body. Additionally, they aid in diagnosing various medical conditions when their levels or composition deviate from the normal range.
