Leukocytes - Red Blood Cells (Erythrocytes) Most abundant...

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Unformatted text preview: Red Blood Cells (Erythrocytes) Most abundant blood cells (99.9% of formed elements) In , 1L of blood contains 4.5-6.3 million RBCs In , 1L of blood contains 4.2-5.5 million RBCs Contains the red pigment hemoglobin which binds and transports O 2 and CO 2 Each RBC is a biconcave disc Diameter 8m Thickness 2.5m Sickle-cell Anemia A single mutation in the gene for the chain of the globin molecule results in abnormal hemoglobin (HbS) Due to the structural change, the chains link together and become stiff rods under low-O 2 conditions. This causes the RBCs to become sickle-shaped and these malformed RBCs can then block and clog small blood vessels. Leukocytes Granulocytes Agranulocytes Help defend the body against invasion by pathogens, and they remove toxins, wastes, and abnormal/damaged cells A typical L of blood contains 6000-9000 WBCs. Compare that to RBCs Most of the WBCs in the body at a given moment are in the connective tissue proper or in organs of the lymphatic system Circulating WBCs are just a fraction of the total # Leukocytes ( leuko=white, cyte=cell ) All contain nuclei and organelles unlike White Blood Cells...
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This note was uploaded on 04/10/2011 for the course BIOL 4202 taught by Professor Staff during the Spring '11 term at North Texas.

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Leukocytes - Red Blood Cells (Erythrocytes) Most abundant...

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