Cardiovascular part 2

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Author:
Floe
ID:
137321
Filename:
Cardiovascular part 2
Updated:
2012-02-24 11:29:57
Tags:
anatomy
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Dr.Altman
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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?
    4%
  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?
    0.5%
  5. What is the oxygen demand for the heart?
    10%
  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

    >Where?

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


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


    >Where?

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


    Parasympathetic nerve fibers to vagus nerve
  12. Diastole
    Relaxation
  13. Systole
    Contracting
  14. Atrial systole (2)
    *S-A nodes fires
  15. * right and left atrium valves are opened letting blood from atrium rush to ventricles.
  16. ventricular systole (2)
    *Semilunar Valves open and blood rush out of ventricles

    *Ventricles Relax
  17. Atrial Diastole
    Atria are relaxed, ventricles contract pumping blood into lungs and body.
  18. AV valves are closed and semilunar valves are open
  19. Cardiac output
    Amount of blood pumped from left ventricle to aorta per minute


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

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

    Temperature
    *Increased temperature increase heart rate

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

    Gender
    Males: Slightly lower


    Females: Slightly higher
  28. Heart Rate Factor:

    Emotion
    * Fear and anger (epinephrine) Increase HR

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


    Dub#2- Semilunar valves Close

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