NURS 364 Lecture Notes - Lecture 3: Bone Marrow, Complete Blood Count, Red Blood Cell
14 Dec 2017
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Document Summary
Red blood cells that contain hemoglobin that binds oxygen. Platelets that help the blood to clot. The fluid component of the blood serves as transport medium. Stimulate proliferation, differentiation and functional activation of various blood cell precursors in bone marrow. Anemias--- lack of capacity of the blood to carry oxygen. Red blood cells (rbcs) nhave their shape because they have to be flexible and they carry oxygen and the oxygen has to move easily back and forth . 2 pairs of polypeptide chains attached to heme unit which surrounds an atom of iron (fe) 280 million hemoglobin in each rbc. 4 molecules of o2 can be carried by each hgb. Carried by transferrin and stored in liver as ferritin. Rbcs squeeze through blood vessel membranes to enter the circulation as reticulocytes (mature into rbc in the blood (24-48 hours) Spleen----some passage ways are a quarter of the size of the rbc.
