FAMU BSC1005 DRLONG

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Lori6710
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247221
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FAMU BSC1005 DRLONG
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2013-11-16 18:22:56
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FAMU DRLONG CHP14PART2
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FAMU DRLONG
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  1. Circulatory System
    • -Transports gases and other substances throughout the body!
    • -Three main components : Central pump(heart), Vascular system (blood vessel), Circulating fluid (blood)
  2. The cardiovascular system has 3 types of blood vessels. List them and their functions.
    • Arteries, Capillaries, Veins. 
    • A-carry blood away from the heart
    • C-permit exchange f materials with tissues
    • V-carry blood toward the heart
  3. Arteries have three layers. Name them
    Endothelium, Middle layer, Outerlayer.
  4. What is the largest artery in the human body?
    • The aorta.
    • -is 25mm wide
    • -carries o2 rich blood from heart to other parts of the body.
    • -branch off into arterioles.
  5. Capillaries
    • -Join arterioles to venules
    • -exchange of substances across thin walls
  6. What are the 2 forces that control movement of fluid through a capillary wall?
    Blood pressure (water from blood to tissues), osmotic pressure(water from tissues to blood).
  7. The Veins
    • -Veins and venules take blood from the capillary beds to the heart.
    • -Venules drain blood from capillaries and join them to form a vein
    • -Blood flow in veins is primarily dependent of skeletal muscle contraction.
  8. Blood
    -A connective tissue with a liquid matrix.
  9. List some of the functions of blood.
    Transport(nutrients, wastes, hormones), Regulation(body temperature, blood & osmotic pressures, pH), Protection(disease-causing pathogens, excess loss of blood by clotting mechanisms.
  10. Plasma
    -Contains inorganic and organic substances dissolved or suspended in water.
  11. Plasma proteins
    • Transport-albumin transports bilirubins, lipoproteins transports cholesterol
    • Blood clotting-fibrinogen
    • Fight disease- immounoglobulins
  12. Red Blood Cells: Facts and Function
    • -Manufactured in red bone marrow of certain bones
    • -Contain hemoglobin
    • -120 day lifespan (possibly due to lack of nucleus
    • -Destroyed in the liver and spleen
  13. White Blood Cells : Facts
    • -Helps fight infection and provide immunity
    • -Divided based on structure into 2 groups
    • a.granular leukocytes (have visible ganules in cytoplasm)
    • b.agranular leukocytre
  14. White Blood Cells and Disease
    -If the number of any type of white blood cell increases or decreases beyond normal, it may indicate presence of disease.

    • a. bacterials infections : neutrophils elevated
    • b. Infectious mononucleosis : B cells elevated
    • c. AIDS : T cells levels decreased
    • d. Leukemia : abnormal white blood cells
  15. Human Heart :

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