Blood is divided into two parts, namely blood plasma and blood cells. Blood plasma is the yellow liquid that it contains 92% water, protein and serum.
The task of the blood plasma are as follows:
a. Bringing food juices.
b. Bringing metabolic waste.
c. Transporting or hormone secretion.
Blood cells consist of erythrocytes, leukocytes, and platelets.
Red blood cells (erythrocytes).
Erythrocytes is a major part of the blood cells due to the many number between other blood cells. Flattened shape with two concave surfaces (biconcave), no core, and yellowish.
The red color in erythrocytes due to a hemoglobin (Hb), which is a protein compound that combines with hemin compounds. Hemin compound containing iron. Hemoglobin serves to transport oxygen throughout the body and transports carbon dioxide from body cells to the lungs.
..jpg "Red blood cells (erythrocytes).")
Blood that contains oxygen pink, while blood that contains carbon dioxide dark red. In normal adults every 1 mm3 of blood contains about 5 million red blood cells if the number of red blood cells means less than 5 million people are suffering from anemia (lack of blood).
Anemia can be caused by several things, such as low hemoglobin levels, reduced blood volume (eg due to accidents), blood cancer (leukemia), hookworm disease, malaria diseases and disorders of the bone marrow.
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