ANAT 100 Lecture Notes - Lecture 8: Bone Marrow, Granulocyte, Heparin
1 Dec 2017
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Document Summary
Transportation elements throughout the body: regulating bodily functions. Physical characteristics of blood: has predictable and stable characteristics that allow it to complete its functions, viscosity (thickness of a fluid): 4x more viscous than water, volume in an average indv: 5l. Plasma: accounts for 55% of total volume in blood. 1% inorganic salts (electrolytes such as na, k, ca), nutrients and organic wastes. Formed elements: 3 types; make up 45% of blood. Erythrocytes: aka rbcs; contain hemoglobin to transport oxygen and carbon dioxide throughout the body: non-true cells because they lack nucleus, 8um in diameter and 2um thick lifespan is approx. Thrombocytes: aka platelets and are smallest formed elements of blood. Function is hemostasis (stopping blood: non-true cells (lack nucleus, round or spindle shaped discs, 2-4um in diameter, originate from megakaryocytes (very large) in the red bone marrow. Leukocytes: aka wbcs; have nucleus but do not contain hemoglobin.
