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Blood

Blood. Overview… Blah…. What it is Structures & Functions Parts of blood Red blood cells White blood cells Plasma Platelets Lymph Blood Type and Rh Factor Blood Extras… Blood Donation Infection Blood-doping. Blood – What it is?. Specialized fluid in the body.

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Blood

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  1. Blood

  2. Overview… Blah… • What it is • Structures & Functions • Parts of blood • Red blood cells • White blood cells • Plasma • Platelets • Lymph • Blood Type and Rh Factor • Blood Extras… • Blood Donation • Infection • Blood-doping

  3. Blood – What it is?... • Specialized fluid in the body. • Delivers necessary substances. • Nutrients • Oxygen • Removes waste products from cells. • Carbon dioxide • Cell waste

  4. Parts of the Blood

  5. Structures & Functions of Blood

  6. Red Blood Cells • A.k.a. Erthrocytes (“red” & “cell”) • Deliver oxygen & remove carbon dioxide and other waste. • Red because it contains hemoglobin which binds oxygen. Bluer when oxygen-poor. • Made in bone marrow in humans. • Live for 120 days • No organelles or nucleus • Single drop = millions of cells

  7. White Blood Cells

  8. White Blood Cells • A.k.a. leukocytes (“white” & “cell”) • Cells of the immune system • Defend the body against infectious disease and foreign materials. • Indicator of disease – 1% of blood in healthy adult. Greater # may mean infection. • Produced in the bone marrow. • Live a few days to a few weeks.

  9. Platelets

  10. Platelets • A.k.a. Thrombocytes • Responsible for clotting of the blood when exposed to air. • Small, colorless, irregular shape, sticky surfaces. • Life span of 8-12 days • Excessive bleeding can occur if their numbers are too low.

  11. Plasma • Responsible for transport of cells. Like the stream to fish. • Carries dissolved salts (Ca, Na, Mg, K) • Transports blood, glucose, carbon dioxide. • ~55% of blood. Straw-colored, clear liquid. Mostly (~90%) water. • Serum is plasma without clotting proteins.

  12. Blood Types & Rh Factor

  13. Blood Types & Rh Factor • A, B, AB, O refer to the presence or absence of antigens in the blood. • O is most common (neither antigen). • Blood types are inherited. • Rh refers to the Rhesus Monkey – an antigen (D) is present in some people (which is common to Rhesus) = +. • 85% are + (99% Asians are +) • 15% are -.

  14. RBC Compatibility

  15. Conditions • Anemia – a symptom in which there are reduced RBC’s. Other symptoms are pale skin, feel weak, fast heart beat. • Leukemia – cancer affecting bone marrow and immunity. • Sickle-cell – anemia resulting genetically. RBC’s are sickle shaped.

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