Blood - Blood Carries oxygen via RBC Protects against...

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Blood 0. Carries oxygen via RBC 1. Protects against infection via WBC 2. Promotes clotting via platelets 0. A connective tissue 3. Transports: 0. Nutrients 1. Waste (Urea and Nitrogenous waste) 2. Hormones Blood and Blood Cells The WHOLE blood includes red blood cells, white blood cells, platelets, and plasma. •Heavier than water •3-4 X more viscous than water •Average adult blood volume: 5.3 quarts B. Blood Volume and Composition 1. Hematocrit (HCT): cells by volume ( normal 45%) cells and 55% plasma. 2. Plasma: clear straw colored liquid (normally 55%) water (92%) amino acids proteins carbohydrates lipids vitamins hormones electrolytes cellular waste B. Blood Volume and Composition 1. Hematocrit (HCT): cells by volume ( normal 45%) 2. Plasma: clear straw colored liquid (normally 55%) 3. Buffy Coat- Leukocytes and Platelets (less than 1%) Characteristics of Red Blood Cells (Er ythrocytes) biconcave disks increase surface area carries more gas allows hemoglobin to bind
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elastic and flexible lack nuclei - do not divide or synthesize proteins When oxygen combines with hemoglobin bright red oxyhemoglobin results. Deoxygenated blood (deoxyhemoglobin ) is darker Red Blood Cell Counts (RBCC or RCC) # of red blood cells in a mm 3 Normal 4.5-6 million 4,600,000-6,2000,000 cells per mm 3 for males 4,500,000-5,100,000 cells per mm 3 for females Red Blood Cell Production and Its Control *Embryo and fetus- occurs in the yolk sac, liver, and spleen *After birth- it occurs in the red bone marrow *The average life span- 120 days
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This note was uploaded on 05/08/2008 for the course BIO 101 taught by Professor Mac during the Winter '02 term at Full Sail.

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Blood - Blood Carries oxygen via RBC Protects against...

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