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CIRCULATORY SYSTEM

Explore the functions of blood, composition, types, heart anatomy, terms, blood vessels, and circulation in this informative guide. Learn about blood's crucial roles, heart chambers, vessel types, and the importance of a healthy circulatory system.

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CIRCULATORY SYSTEM

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  1. CIRCULATORY SYSTEM -Blood, heart, blood vessels

  2. Introduction to the Circulatory System – 0:58

  3. I. BLOOD A. Functions 1. carries food, oxygen, carbon dioxide, hormones & enzyme 2. transports wastes 3. clots blood 4. helps fight infection 5. distributes heat

  4. Blood – 4:11

  5. B. Composition 1. plasma – liquid part of blood

  6. Solid Parts 2. R.B.C. – carries oxygen & carbon dioxide Anemia – caused by lack of r.b.c. or iron

  7. 3. w.b.c. – helps fight infection

  8. 4. platelets – clot blood

  9. C. Blood Types

  10. - Universal DONOR – type O (can donate to anyone) – no antigens - Universal recipient – type AB (can receive from anyone) – no antibodies

  11. Rh factor: + or - Rh + : has + antigen Rh - : has + antibody

  12. Blood – 4:11

  13. II. Heart A. Chambers/valves 1. right atrium (receives blood from body)  Right AV (or tricuspid) valve closes to sound “lub”

  14. 2. right ventricle – pumps blood through to pulmonary (semilunar) valve closes to sound “dupp”  to lungs (give off carbon dioxide & takes in oxygen

  15. 3. Left Atrium – receives oxygenated blood from lungs  left AV (or bicuspid) valve closes to sound “lub” (at same as right AV valve)

  16. 4. Left ventricle – strongest chamber: pumps out blood through aortic valve (closes to sound “dupp”)  aorta  rest of the body

  17. Heart – 4:33

  18. B. Terms 1. Heart attack – clot in heart (usually in coronary arteries 2. blood pressure – pressure in artery walls; ex. 120/80 – pressure when contraction/ relaxation of ventricles 3. heart murmur – faulty valve (often) 4. CPR – cardio (heart); pulmonary (lung) recessitation

  19. III. BLOOD VESSELS A. Arteries – carry blood AWAY from the heart; most carry oxygen & are bright red; thicker & stronger B. Arterioles – small arteries

  20. C. Capillaries – connect arterioles to venules; microscopic; exchange of gases & nutrient takes place here between blood & cells

  21. D. Venules – small veins E. Veins – carry blood to heart; most carry carbon dioxide & are deep purple; less elastic; some have valves; - varicose veins/hemorrhoids – flabby veins

  22. F. Other Terms 1. stroke – blood clot in vessel in brain 2. high blood pressure – pressure too high in arteries which can lead to heart attack, stroke, kidney damage, blindness

  23. Blood Vessels – 4:17

  24. CIRCULATION Right Atrium  right ventricle  lungs  left Atrium  left ventricle  aorta/arteries  arterioles  capillaries venules  veins  back to heart (right atrium)

  25. Healthy Circulatory System – 0:37

  26. Summary – 0:58

  27. THE END!!!

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