med. term. 7 valves of the heart.txt

  1. What is a heart valve?
    structures within the heart that open and close with the heartbeat and regulate the flow of blood
  2. aortic valve
    heart valve between the left ventricle and the aorta
  3. mitral or bicuspid valve
    heart valve between the left atrium and left ventricle
  4. pulmonary semilunar valve
    heart valve opening fomr the right ventricle to the pulmonary artery
  5. tricuspid valve
    valve between the right atrium and the right ventricle
  6. what are arterioles?
    small vessels that receive blood from the arteries
  7. what are venules?
    small vessels that gather blood from the capillaries into the veins
  8. diastole
    • to expand (resting part of the heart beat)
    • blood fills ventricles
  9. systole
    to contract (when the heart pumps)
  10. what is normotension?
    normal blood pressure
  11. what is hypotension
    low blood pressure
  12. what is hypertension
    high blood pressure
  13. what are the purkinje fibers (network)?
    fibers in the ventricles that transmit impulses
  14. what is polarization?
    resting state of the myocardial cells
  15. what is depolarization?
    myocardial cells going from rest to contraction
  16. what is repolarization?
    recharging of the myocardial cell
  17. what is normal sinus rhythm (NSR)?
    • regular rhythm of the heart cycle
    • 60-100 bpm
Card Set
med. term. 7 valves of the heart.txt
med. term. 7 valves of the heart.txt