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Blood

Blood. Function. transport of materials to and from the cells. Simple organisms. single celled organisms use diffusion and osmosis to obtain nutrients and get rid of waste. Complex Organisms. circulatory system brings nutrients to cells and removes waste. BLOOD.

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Blood

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  1. Blood

  2. Function • transport of materials to and from the cells

  3. Simple organisms • single celled organisms use diffusion and osmosis to obtain nutrients and get rid of waste

  4. Complex Organisms • circulatory system brings nutrients to cells and removes waste

  5. BLOOD • The body’s pickup and delivery system

  6. Two Parts • 45% cells • 55% plasma

  7. Cells • red blood cells (RBC’s) • white blood cells (WBC’s) • platelets

  8. RBC’s • Carry oxygen • small • biconcave disks • increases surface area • contain hemoglobin ( include iron) • no nucleus • live about 120 days

  9. WBC’s • Defend body from microorganisms • large • have nucleus • different types • live for different length of time depending on type

  10. Platelets • help in clotting • cell fragments

  11. Plasma • transport of nutrients, gases and waste • consists of • water - 92% • proteins • albumins - maintain osmotic pressure • globulins - immunity • fibrinogen - blood clotting

  12. nutrients • amino acids • lipids • sugars • gases • oxygen • carbon dioxide • electrolytes • sodium, chlorine, potassium, etc. • maintain osmotic pressure & pH • metabolic waste • urea

  13. Disorders • Go to biojones.pbworks.com • Click on Diseases of the Circulatory System • Scroll to the bottom of the page • Use the web site and take notes on the causes, symptoms,treatment and changes in the blood in anemia, leukemia and Rhematic Fever.

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