KIN 2500 : Exam 5
15 Mar 2019
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Introduction: the cardiovascular system consists of three interrelated components, blood, heart, blood vessels, interstitial fluid: cells are being bathed by this; it is renewed by the blood. Need platelet level regulation: hepatocytes: made in the liver; liver cells that synthesize plasma proteins. Components of blood: blood plasma (55%, electrolytes: help maintain blood osmotic pressure, rbcs (45%, wbcs & platelets, erythropoietin (epo): hormone that stimulates the production of. Formed elements of blood: rbcs, wbcs, & platelets, rbcs contain spectrin, which makes the rbc pliable, rbcs are biconcave. Formation of blood cells: formed elements do not divide once they leave red bone marrow! (except for lymphocytes, hemopoiesis: production of formed elements in the blood; occurs in the liver and spleen, thymus gland, and lymph nodes. 3 months after birth, this will be produced in red bone marrow, therefore red bone marrow is highly vascularized.
