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Author:
jgething
ID:
270628
Filename:
heart
Updated:
2014-04-15 06:07:35
Tags:
hkg
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'lhk
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  1. Blood Flow Through the Heart
    SVC/IVC-RA-TV-RV-PSV-PT-PA-Lungs-PV-LA-BV-LV-ASV-A
  2. What do Autorhythmic Fibers do?
    Act as a pacemaker.
  3. What does Spontaneous depolarization mean?
    pacemaker potential 75 times/minute
  4. What does the Sinoatrial Node Do?
    Acts as a natural Pacemaker and initiates over 100 times per second
  5. Does the SA node establish a rhythm for the heart?
    nope
  6. What hormones increase heart rate?
    Epinephrine norepinephrine and thyroid hormones
  7. EKG waves and their meanings
    • P wave- atrial contraction
    • QRS- ventricles contract and mask atrial re-polarization
    • T - ventricles repolarize
  8. Normal Blood pressure
    • 120 Systole
    • 80 Diastole
  9. What is systole?
    contraction
  10. What is diastole?
    Relaxation
  11. What does the foramen ovale do?
    In the fetal heart it takes blood from the lungs between the right and left atria
  12. What does ductus arteriosis do?
    Shunts blood from pulmonary trunk to aorta in the fetal heart.
  13. What supplies the heart with blood?
    Coronary arteries
  14. What is stroke volume?
    volume of blood pumped per beat
  15. What is cardiac output?
    amount of blood circulated in one minute
  16. What increases cardiac output?
    The amount of BPM
  17. What is a normal heart rate?
    60-90 BPM
  18. What does the right atrium do?
    Receives deoxygenated blood from the vena cava to send through the tv into the right ventricle
  19. Is plasma mostly water?
    Yes
  20. What do neutrophils do?
    Leukocytes that fight against bacteria and are the most numerous
  21. What do eosinophils do?
    Release histaminase (allergies) and attack parasitic worms
  22. What do T Cells do?
    Attack viruses
  23. What are the blood types and their compatabilities?
    • AB-universal recipient
    • A
    • B
    • O-universal donor
    • most people are Rh +

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