ANAT 215 Lecture Notes - Lecture 5: Fibrinogen, T Cell, Eosinophil
23 Feb 2015
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Cardiovascular system: blood (reading material: chapter 20: pages 530-541) Formed elements (45% of the blood): erythrocytes (red blood cells): non true cells (no nucleus) gives rise to central depression in cell. Size of cell compared to other w. b. c or to red blood cells. Barr body (drumstick) in females abundant granules small pinkish staining granules contains lysosomal enzymes and bactericidal compounds phagocytic outside of the blood first line of defense against bacterial invasion eosinophils: 1 or 2 nucleoli more abundant then in the lymphocyte no granules thyrombocytes (platelets): non true cells (no nucleus) smallest formed elements of blood round or spindle shaped discs. 2-4 um in diameter originate from megakaryocytes in the red bone marrow life span is approximately 10 days. 200,000 to 400,000 platelets per microliter of blood (average is. 350,000) often appear in clumps functions: instrumental in clotting function definition accounts for 55% of blood volume composition:
