Circulatory system.txt

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Circulatory system.txt
2013-11-14 20:50:33
biology 20

A short circulatory system card list that I made for practise
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  1. Systematic circulation
    • -blood travels to body cells
    • -pumped from left side of heart to body then back through right atrium
  2. Pulmonary circulation
    Deoxygenated blood goes from right ventricle to the lungs and returns through the left side of the heart
  3. Coronary circulation
    • Oxygenated blood travels through tissues of the heart
    • Oxygenated blood from left ventricle leaves from 2 openings in the aorta
  4. Myogenic contraction
    Muscle contraction
  5. Sinoatrial node
    • -controls heart beat
    • -wall on right atrium
    • -generates electrical impulses
    • -causes atrias to relax and contract
  6. Atrioventricular node
    • -base of right atrium
    • -delays impulse
    • -Allows ventricles to fill with blood
  7. P wave
    Atrial excitation begins and atria contracts. Av valve opens,semilunar valve closes
  8. QRS wave
    Ventricular exvitation and ventricles contract. Av valve closes and semilunar valve opens.
  9. T wave
    Ventricles relax. Av valves open and semilunar valve closes
  10. Influences on the heart rate
    • -Hormones
    • -body temp
    • -too much blood in aorta
    • -too much blood in venacava
    • -increased blood CO2
    • -chemical stimuli
  11. Indicators of cardiovascular health
    • Heart rate'beats/min'
    • Stroke volume'mL/min'
    • Cardiac output'mL/min'
  12. Stroke volume
    Ability of the ventricles to fill up and empty-stretch and strength-
  13. Why does a short recovery time mean good cardiovascular health?
    CO2 is let out and there is efficient gas exchange
  14. Label the diagram