Cardiovascular part 2

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  1. What are the four coronary arteries branching off the aorta?
    1. posteriorinterventricular artery

    2. Marginal Artery

    3.Circumflex artery

    4.Anterior interventricular artery
  2. what percent of blood enters the coronary artery?
  3. what are the three major coronary veins?
    1. small cardiac vein

    2. middle cardiac vein

    3. Great cardiac vein
  4. What is the weight percentage of the heart?
  5. What is the oxygen demand for the heart?
  6. What is an angiogram?
    Technique used to visualize the inside of blood vessels.
  7. Ischemia
    Blood (oxygen) deficiency in a branch of the coronary artery , often due to blockage from an embolus.
  8. Angina pectoris
    Chest pain that often accompanies ischemia
  9. Myocardial infarction
    (Heart Attack) Death to a portion of the heart due to ischemia.
  10. Cardioacceleratory center


    >What type of nerve fibers leave this region?
    Medulla Oblongata

    Sympathetic nerve fibers to spinal cord to accelerator nerves
  11. Cardioinhibitory center


    >What type of nerve fibers leave this region?
    Medulla Oblongata

    Parasympathetic nerve fibers to vagus nerve
  12. Diastole
  13. Systole
  14. Atrial systole (2)
    *S-A nodes fires

    * right and left atrium valves are opened letting blood from atrium rush to ventricles.
  15. ventricular systole (2)
    *Semilunar Valves open and blood rush out of ventricles

    *Ventricles Relax
  16. Atrial Diastole
    Atria are relaxed, ventricles contract pumping blood into lungs and body.

    AV valves are closed and semilunar valves are open
  17. Cardiac output
    Amount of blood pumped from left ventricle to aorta per minute

    =stroke volumeXbeats/minute
  18. Stroke volume
    amount of blood pumped from left ventricle to aorta PER HEART BEAT

    Approximately= 70-90 ml
  19. Beats per minute
    approximately 75
  20. Auscultation
    Act of listening to heart sounds
  21. Murmurs
    Turbulance due to damaged vavles
  22. Stenosis
    Incomplete opening of heart valve
  23. Insufficiency
    Incomplete closer of heart vavle
  24. Heart rate factor:

    *Increased temperature increase heart rate

    *decreased temperature decreased heart rate
  25. Heart rate Factor:

    Males: Slightly lower

    Females: Slightly higher
  26. Heart Rate Factor:

    * Fear and anger (epinephrine) Increase HR

    *Grief - Decrease HR
  27. Aortic Aneurysm
    Weakness in wall of artery
  28. Lub Dub sound
    Lub#1- Av Valves Close

    Dub#2- Semilunar valves Close
Card Set:
Cardiovascular part 2
2012-02-24 16:29:57

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