Ch11 Cardiovascular System - Vocabulary

  1. aorta
    largest artery in body
  2. arteriole
    small artery
  3. atrioventicular bundle (HIS --> "HISS")
    specialized muscle fibers connecting the atria w/ ventricles & transmitting electical impulses b/t them
  4. atrioventricular node (AV node)
    specialized tissue in the wall b/t atria. electrical impulses pass frm pacemaker (SA node) thru AV node & atrioventricular bundle (HISS) twrd ventricles
  5. atrium (pl: atria)
    one of two upper chambers of heart
  6. capillary
    smallest blood vessel. mat'ls pass to & frm the bloodstream thru thin capillary walls
  7. carbon dioxide
    gas (waste) release by body cells, transported via veins to heart & to then lungs for exhalation
  8. deoxygenated blood
    blood that is oxygen-poor
  9. diastole
    relasation phase of heartbeat
  10. electrocardiogram
    electricity record of the heart
  11. endocardium
    inner lining of heart
  12. endothelium
    innoermost lining of blood vessels
  13. mitral valve
    valve b/t the left atrium & left ventricle; bicuspid valve
  14. mumur
    abnrml heart sound caused by impoper closure of heart valves
  15. myocardium
    muscular, mid layer of heart
  16. normal sinus rhythm
    heart rhythm originating in sinoartial node w/ resting rate of 60 - 100 beats/min
  17. oxygen
    gas that enters blood thru the lungs & travels to the heart to be pumped via arteries to all body cells
  18. pacemaker (sinoatrial node)
    specialized nervous tissue in the right atrium that begins the heartbeat.

    [an artificial cardiace pacemaker is an electronic apparatus implanted in the chest to stimulate heart muscle that's weak & not functioning]
  19. percardium
    membrane surrounding the heart
  20. pulmonary artery
    artery carrying oxygen-poor blood from heart to lungs
  21. pulmonary ciculation
    flow of blood frm the heart to lungs & back to the heart
  22. pulmonary valve
    valve positioned b/t the right ventricle & pulmonary artery
  23. pulmonary vein
    one of two pairs of vessels carrying oxygenated blood frm lungs to left atrium of heart
  24. pulse
    beat of heart as felt thru walls of arteries
  25. septum (pl: septa)
    wall dividing a cavity; such as b/t the right and left atria & right and left ventricles
  26. sinoatrial node (SA node)
    pacemaker of heart
  27. sphygmomanometer
    instrument for measure blood pressure
  28. systemic circulation
    flow of blood frm body tissue to heart & then frm heart back to body tissues
  29. systole
    contraction phase of heartbeat.
  30. tricuspid valve
    located b/t the right artrium & right ventricle, has three leaflets (or cusps)
  31. valve
    structure in veins or heart temporarily closes an opening so blood flows in only one direction
  32. vein
    thin-walled vessel that carries blood frm body tissues & lungs back to heart. contains valves to prevent backflow of blood
  33. vena cava (pl venae cavae)
    lrgst vein in body. superior & inferior venae cavae return blood to right atrium of heart
  34. ventricle
    one of two lower chambers of heart
  35. venule
    small vein
  36. acute coronary syndromes
    plague rupture in coronary arteries; angina & myocardial infarction
  37. angina
    chest pain from myocardial ischemia
  38. angiotensin-converting enzyme inhibitor
    antihypertensive drug blocks conversion of angiotenis I to II and dilates blood vessels; prevents heart attacks, coronary heart failure, stroke & death
  39. auscultation
    listening to sounds w/ stetheoscope
  40. beta-blockers
    drugs use to treat angina, hypertenstion & arrhythmias
  41. biventricular pacemaker
    device enabling ventricles to beat together to allow blood to pump out of heart
  42. bruit
    abnrml blowing or swishing sound of artery/organ
  43. calcium channel blockers
    to treat angina & hypertension
  44. cardiac arrest
    sudden unexpected stop of heart
  45. cardiac tamponade
    pressure on heart caused by fluid in preicardial space
  46. claudication
    pain, tension & weekness in leg after walking has begun, but absense of pain at rest
  47. digoxin
    drug treats arrhythmias & strengthens heartbeat
  48. embolus
    clot that travels to distant location & suddenly blocks blood vessels
  49. infarction
    area of dead tissue
  50. nitrates
    drugs used in treatment of angina
  51. occlusion
    closure of blood vessel
  52. palpitations
    uncomfortable sensations in the chest related to cardiac arrhythmias; premature ventricular contractions.
  53. patent
  54. pericardial friction rub
    scraping or grating noise of heart, pericarditis
  55. petechiae
    sm., pinpoint hemorrhages
  56. statins
    drugs used to lower cholesterol in bloodstream
  57. thrill
    vibration felt on touching the hbody over an area of turmoil in blod flow (as a blocked artery)
  58. vegetations
    clumps of platelets, clotting proteins, microorgs & red blood cells on endocardium in cond; such as bacterial endocarditis & rheumatic heart disease
Card Set
Ch11 Cardiovascular System - Vocabulary
Chapter 11