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10 Cards in this Set
- Front
- Back
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Identify the major components of the cardiovascular system
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Blood
Heart Blood Vessels |
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Major function of the blood
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Transportation
Regulation Protection |
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Describe the physical characteristics of blood, including pH,viscosity,volume,color changes.
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pH=slightly alkaline ranges from 7.35-7.45
Viscosity=thicker than water Volume=5-6 liters male,4-5 liters female Color changes= bright red- high oxygen dark red-low oxygen Temp=100.4F=38C |
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Distinguish between blood plasma and formed elements
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Blood Plasma=55% of blood
Formed elements=45% of blood |
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Major components of blood plasma
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91.5% of plasma is mostly water
8.5% of plasma is solutes (electrolytes,nutrients,wastes,etc.) Plasma proteins -Albumins-maintain osmotic pressure -Globulins-produce antibodies -Fibrinogen-used for blood-clotting |
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Formed elements of the blood
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Erythrocytes=Whole Red blood cells
Leukocytes=Whole White blood cells Thrombocytes= Platelets pieces of cells |
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Define Hemopoiesis
Pluripotent stem cells Myeloid stem cells Lymphoid cells |
Hemopoiesis-formation of blood cells
Pluripotent stem cells - --1st unspecialized cells --can develop into all types of blood cells Myeloid Stem cells --Begin and Finish development in red bone marrow --give rise to RBC's, platelets,monocytes,neutrophils Lymphoid stem cells --development in red bone marrow --finish development in lymphatic tissue --give rise to lymphocytes |
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Describe the anatomy of erythrocytes
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No Nucleus or other organelles
-cannot divide -no mitochondria -cytosol filled with hemoglobin Plasma membrane strong and flexible Biconcave |
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Describe the function of erythrocytes ,including the structure and role of hemoglobin
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Erythrocytes function is to carry oxygen to all the tissues from the lungs.
Structure of hemoglobin 1.globin=protein portion made of 4 polypeptide chains -2 alpha chains -2 beta chains 2.Heme=non protein pigment attached to each chain -each hemoglobin can carry 4oxygen atoms -iron atom at center of each heme group Function of hemoglobin 1.transports oxygen through the bloodstream 2.also transports carbon dioxide |
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Life cycle of red blood cells
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1.eaten by macrophage in spleen or liver
2.broken apart into globin and heme 3.globin portion broken down into individual amino acids then recycled |
