Chapter 29 Blood

Chapter 29 Blood - Chapter 29 Blood 1 Composition of Blood...

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Unformatted text preview: Chapter 29 Blood 1 Composition of Blood • Blood is sticky • Color varies from scarlet to dark red • The pH of blood is 7.35–7.45 • Temperature is 38C • Average volume: 5–6 L for males, and 4–5 L for females 2 Composition of Blood • It is composed of liquid plasma and formed elements • Formed elements include: – Erythrocytes, or red blood cells (RBCs) – Leukocytes, or white blood cells (WBCs) – Platelets 3 Blood Plasma - Matrix • Blood plasma contains over 100 solutes, including: – Water – 90% – Proteins – albumin, globulins, clotting proteins, and others – Organic nutrients – glucose, carbohydrates, amino acids – Electrolytes – sodium, potassium, calcium, chloride, bicarbonate – Respiratory gases – oxygen and carbon dioxide 4 Components of Whole Blood Figure 17.1 5 Erythrocytes (RBCs) • Biconcave discs, anucleate, essentially no organelles • Filled with hemoglobin (Hb), a protein that functions in gas transport • Red or pink • 4.5million to 5.0 million cells/mm3 • Life span – 100 to 120 days 6 Erythrocytes (RBCs) Figure 17.3 7 Components of Whole Blood Figure 17.2 8 Leukocytes (WBCs) • 4000-11000 cells/mm3 • Nucleated • Diapedesis • Divided into 2 groups: – Granulocytes and agranulocytes 9 Granulocytes • Granulocytes – neutrophils, eosinophils, and basophils – Contain cytoplasmic granules that stain specifically (acidic, basic, or both) with Wright’s stain – Are larger and usually shorter-lived than RBCs – Have lobed nuclei – Are all phagocytic cells 10 Neutrophils • Neutrophils have two types of granules that: – Take up both acidic and basic dyes...
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This note was uploaded on 01/06/2012 for the course BIOL 2402 taught by Professor Elainefanin during the Spring '11 term at Collins.

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Chapter 29 Blood - Chapter 29 Blood 1 Composition of Blood...

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