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BLOOD the river of life

BLOOD the river of life. COMPONENTS OF BLOOD. Functions of blood. Carries oxygen to cells for cell respiration Carries CO 2 from cell respiration away to lungs Carries nutrients from digestion to cells Carries metabolic cell wastes to liver, kidney Transports enzymes and hormones

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BLOOD the river of life

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  1. BLOOD the river of life COMPONENTS OF BLOOD

  2. Functions of blood • Carries oxygen to cells for cell respiration • Carries CO2 from cell respiration away to lungs • Carries nutrients from digestion to cells • Carries metabolic cell wastes to liver, kidney • Transports enzymes and hormones • Carries cells, proteins that can fight invaders • Controls clotting

  3. How much blood is in a human? • 4 to 6 liters, on average • 45 % of blood consists of blood cells • 55% is PLASMA, the liquid that carries the blood cells and other substances

  4. What’s in PLASMA? • Dissolved gases and salts • Nutrients from the digestive system • Metabolic wastes from the cells • Plasma Proteins • Fibrinogen and other clotting factors

  5. What about cells?

  6. At maturity live about 120 days Contain HEMOGLOBIN, the protein that carries oxygen to tissues ANEMIA results if the red cell count, or if the amount of hemoglobin in each cell is lower than normal what cell part is missing? Red cells = Erythrocytes

  7. ANEMIA: Low red cell number, function Can be due to low iron or vitamin levels or to abnormal types of hemoglobin Sickling caused by abnormal Hemoglobin S

  8. WHITE BLOOD CELLS The Army of the Circulatory System

  9. Types of WHITE BLOOD CELLS • White cells are also known as LEUKOCYTES • Phagocytes surround, kill, and digest invaders • endocytosis

  10. BLOOD COUNTS • By counting cells, measuring hemoglobin, and looking at the types of white blood cells present, doctors can tell if their patients are anemic or if they might be fighting off a serious infection

  11. PLATELETS • Cell fragments that work with plasma proteins to allow bleeding to stop

  12. Platelets and Proteins in a clot

  13. BLOOD IS ESSENTIAL • Consider donating your blood to help someone that is sick, you might save their life!

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