Ch. 13 - Blood - The Cardiovascular System Blood...

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Unformatted text preview: The Cardiovascular System Blood Cardiovascular System Consists of 3 components Blood Formed Liquid Vessels Arteries, arterioles, capillaries, venules, veins Heart Functions of Blood Transportation Oxygen Carbon dioxide Nutrients Hormones Waste Functions of Blood Regulation pH Body temperature Water content of cells (by osmosis) Protection Clotting Combating toxins and microbes Physical Characteristics of Blood Viscosity (thickness) greater than that of water Temperature of 38 C (100.4 F) pH of 7.35-7.45 8% of body weight Volume is 4-6 L (more in than ) Color varies Highly O 2 red while non-O 2 dark red/purple Components of Blood Formed elements (45%) RBC (erythrocytes) Hematocrit % of total blood volume occupied by RBC WBC (leukocytes) Platelets (thrombocytes) Components of Blood Liquid elements (55%) Plasma (91.5% water and 8.5% solutes) Proteins Albumins, globulins, fibrinogen Nutrients Vitamins Hormones Respiratory gases Electrolytes Waste Blood Plasma Plasma Proteins Most abundant of the dissolved solutes in plasma. Three main groups Albumins Globulins fibrinogen Albumins (60% of plasma proteins) Smallest of the plasma proteins Synthesized in the liver Important in osmotic pressure Helps regulate water movement between the blood and the tissues Globulins (36% of plasma proteins) Synthesized in the liver Alpha and beta (transport lipids and fat-soluble vitamins) Synthesized in the lymphatic tissues Gamma (constitute a type of antibody)-antibodies produced during certain immune response Blood Plasma...
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Ch. 13 - Blood - The Cardiovascular System Blood...

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