Lecture 03 - 011111

Lecture 03 - 011111 - Lecture Professor Julian Schroeder I....

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1 Lecture Professor Julian Schroeder I. Components of Blood II. Gas Exchange III. Lungs IV. O 2 Transport V. CO 2 Transport I. COMPONENTS OF BLOOD A. VOLUME: 8% of adult body weight Centrifuged blood reveals plasma (clear) & cells (red) B. PLASMA 1) 90% Water 2) 3% electrolytes: NaCl, KCl, Ca2+, Mg2+, etc; Same as interstitial fluid; important for nerve function 3) 7% Proteins: Immunoglobulins (antibodies), Fibrinogens (clotting factors), Albumin (pH balance, osmotic balance)
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2 C. BLOOD CELLS RED BLOOD CELLS transport O 2 , CO 2 - 25x10 12 RBCs per 5L of blood WHITE BLOOD CELLS (leukocytes) fight infections, produce antibodies - 25x10 9 WBCs per 5L of blood THROMBUS: clot of platelets in blood artery I. COMPONENTS OF BLOOD Figure 42.15 I. COMPONENTS OF BLOOD D. CHOLESTEROL ATHEROSCLEROSIS: plaques of lipids on inner walls of arteries; causes hypertension= high blood pressure Figure 42.18
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3 I. COMPONENTS OF BLOOD ARTERIOSCLEROSIS: hardened plaques; reduced diameter; blood clot trapped more easily Cholesterol forms plaques
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Lecture 03 - 011111 - Lecture Professor Julian Schroeder I....

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