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The circulatory system

The circulatory system. The body’s transportation network. Things you should know about the circulatory system. It consists mainly of the heart, blood vessels and blood. The heart. The heart is a four chambered pump that keeps blood moving every minute of your life

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The circulatory system

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  1. The circulatory system The body’s transportation network

  2. Things you should know about the circulatory system • It consists mainly of the heart, blood vessels and blood

  3. The heart The heart is a four chambered pump that keeps blood moving every minute of your life The heart has valves that keep the blood moving in the right direction

  4. Three types of blood vessels arteries – carry blood away from the heart Veins- carry blood back to the heart; also contain valves Capillaries- exchange nutrients, waste, oxygen and Carbon dioxide with the cells

  5. Four main components of blood • Red blood cells (RBC) which carry Oxygen • White blood cells (WBC) which fight disease • Platelets which help clot blood • Plasma which is the watery part of the blood that dissolves nutrients and keeps the blood moving

  6. There are four main blood groups • A- contains A antigens but not B • B- contains B antigens but not A • AB- contains both A and B antigens • O- does not contain A or B antigens • Blood is further classified as Positive (+) or negative (-) by the Rh antigen. + has the Rh factor, - does not.

  7. Interactions • The circulatory system works with the respiratory system to deliver the Oxygen to the cells • The circulatory system works with the excretory system to filter out wastes from the blood • All systems rely on the circulation of blood for nutrients and oxygen.

  8. specific things you can do to protect the health of your circulatory system. • Eat a balanced diet • Participate consistently in aerobic exercise • Practice stress management • Avoid substance abuse (steroids, some allergy medications, amphetamines, smoking, etc.)

  9. The heart • The heart is a four chambered, muscular organ that is responsible for providing the pumping power to move blood through the body. • The heart muscle is called myocardium and is made of cardiac muscle. • **On the pictures, right is left and left is right. (because it is from the perspective of being in your chest)

  10. H Circulation • The heart is the pump that circulates the blood to the body. J I

  11. What is meant by the “two loops” pattern of blood flow? • Loop 1- heart to lungs and back to heart • Loop 2- heart to body and back to heart

  12. Three type of blood vessels • Arteries- carry blood away from heart • Thicker, more smooth muscle tissue • Veins- carry blood to heart • Has valves to prevent backflow • Capillaries- nutrient/ waste- O2/ CO2 exchange

  13. Blood- main parts Red blood cells- carry oxygen White blood cells- fight disease Platelets- forms blood clots Plasma- liquid: hydration

  14. What is blood pressure? • The pressure exerted outward by the blood on the arteries

  15. What is high blood pressure? (Hypertension) • When the blood pressure gets over a normal range and puts to much pressure on the system. Baseline pressure for hypertension is 140/90

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