bio heart

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Author:
lcunrod7
ID:
266811
Filename:
bio heart
Updated:
2014-03-17 19:08:40
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definitions
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  1. towards middle of thoracic cavity but sits slightly left
    mediastinum
  2. what is the membrane that surrounds the heart
    pericardium
  3. what decreases friction and protect the outer layer of heart cells, serous fluid "watery"
    pericardial fluid
  4. what is the inner layer of cells that face ventricle (chamber)
    endocardium
  5. what is the middle layer of cardiac muscle-does the work of pumping blood
    myocardium
  6. what is the outer layer that faces the pericardium
    epicardium
  7. what attach to the chordae tendinae
    papillary muscle
  8. what is sealed off foramen oval (hole between atria which is open during fetal development)
    fossa ovalis
  9. what helps papillary muscle control contraction to make sure valves work right during contraction
    moderator band
  10. what strips of muscle on inner surface of chambers
    trabeculae carnae
  11. what arteries originate from the base of aorta and runs along inter ventricular sulus (groove)
    coronary arteries anterior
  12. what marginal arteries feed surface and feed RA, part of both ventricels, part of conducting system
    right coronary artery
  13. what artery feeds, LV, LA and inter ventricular septum
    left coronary artery
  14. what artery extends from left coronary artery
    anterior inter ventricular artery
  15. what arteries branch from left and right coronary arteries
    coronary arteries posterior
  16. what artery runs from left coronary artery
    circumflex artery
  17. what artery runs from right coronary artery towards apex and is within posterior inter ventricular sulcus
    posterior inter ventricular artery
  18. what vein drain anterior surface of RV and dumps into RA
    anterior cardiac vein
  19. what vein drains blood supplied by anterior inter ventricular artery and empties into coronary sinus
    great cardiac vein
  20. what vein is an expanded vein and opens into RA near base of IVC
    coronary sinus
  21. what vein drains area supplied by circumflex artery
    posterior cardiac vein
  22. what vein drains surface of RA and RV and empties into coronary sinus
    small cardiac vein
  23. what vein drains area supplied by posterior inter ventricular artery and empties into coronary sinus
    middle cardiac vein
  24. what is the contracting of heart called
    systole
  25. what is the relaxation of the heart called
    diastole
  26. what is chamber contracts; pushes blood into next chamber or artery
    systole
  27. what chamber is filling with blood to prepare for contraction
    diastole
  28. what heart sound is "lubb" caused by closing of AV valves (when ventricle start to contract)
    S1
  29. what heart sound is "dupp" semilunar valves closing
    S2
  30. what heart sound is blood flow into the ventricles
    S3
  31. what heart sound is atria contracting
    S4
  32. what is the amount of blood pumped by ventricles in one minute
    cardiac output
  33. what is the number of times the heart beats per minute
    heart rate
  34. what is the amount (volume) of blood pumped out of ventricle in one heartbeat
    stroke volume
  35. what = HR x SV
    cariac output equation
  36. what is the amount of blood in ventricle when filling is complete
    end diastolic volume
  37. what is the amount of blood left in the ventricle when contraction is complete
    end systolic volume
  38. EDV-ESV = what
    stroke volume
  39. what is the maximum % that CO can increase above normal
    cardiac reserve
  40. what cardiac reserve is 300-400% (increase from rest)
    healthy young adults
  41. what cardiac reserve is 500-600% (increase from rest)
    well trained athlete
  42. what has no cardiac reserve
    heart failure
  43. what is the abnormal pattern in the electrical activity
    arrthythmia
  44. what fibrillation have atrial walls quiver instead of producing regular contractions
    atrial fibrillation (a-fib)
  45. what fibrillation has ventricles that cannot produce coordinated contractions and can result in cardiac arest
    ventricular fibrillation (b-fib)
  46. what is it called when heart rate is lower that normal
    bradycardia
  47. what is it called when heart rate is faster than normal
    tachycardia
  48. what in the autonomic nervous system is the "flight" or "fight" response
    sympathetics cardioacceleratory
  49. what in the autonomic nervous system is the "rest/digest" response
    parasympathetic cardioinhibitory
  50. what has the ability to do work in action potential
    membrane potential
  51. what maintains the concentration gradient which maintains membrane potential so that cell can have action potential
    sodium-potassium pump
  52. in action potential of cardiac myocytz, what are fast Na+ channels open, Na+ moves from out of cell to in cell (more "+" in than "-")
    depolarization
  53. in action potential of cardiac myocytz, what are slow Ca2+ channels open, Ca2+ moves from out of cell to in cell
    plateau phase
  54. in action potential of cardiac myocytz, what have Ca2+channels inactivate, slow potassium channels open, K+ moves from in cell to out of cell
    repolarization
  55. in action potential auto rhythmic heart cells, what Na+ channels opening, K+ channels closing
    pacemaker potential
  56. in action potential auto rhythmic heart cells, what ca2+ channels open (happen after pacemaker potential reaches threshold)
    depolarization
  57. in action potential auto rhythmic heart cells, what Ca2+ channels inactivate, K+ channels open
    repolarization

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