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Flashcards

Cardiovascular System

Kylie Miller Inglês 41 flashcards

Flashcards do conjunto (41)

  1. 1Systemic CirculationBlood flow to all body parts except lungs
  2. 2Pulmonary CirculationFlow of blood between heart & lungs only
  3. 3CV FunctionsStructures work together as an efficient system to pump blood to all body tissues, blood supplies oxygen & nutrients to tissues and transport cellular waste products
  4. 4Hearta muscular organ about the size of a fist, located just behind and slightly left of the breastbone. The heart pumps blood through the network of arteries and veins called the cardiovascular system.
  5. 5Blood55% liquid plasma, 45% formed elements
  6. 6ArteriesTransport blood away from heart to all body parts
  7. 7VeinsReturn blood from all body parts to heart
  8. 8CapillariesPermit exchange of nutrients & waste products between blood & cells
  9. 9Septumwall that seperates the 4 chambers
  10. 10AtriaTwo upper chambers of heart, receiving chambers and all blood vessels coming into heart enter here
  11. 11VentriclesTwo lower chambers of heart, pumping chambers, all blood vessels leaving heart emerge from here
  12. 12Tricuspid ValveControls the opening between the right atrium & right ventricle
  13. 13Mitral ValveOr bicuspid valve, located between left atrium and left ventricle
  14. 14Aortic Semilunar ValveLocated between left ventricle and aorta
  15. 15Pulmonary Semilunar ValveLocated between right ventricle and pulmonary artery, shaped like half-moon
  16. 16AortaLargest blood vessel in body, main trunk of arterial system, begins from left ventricle
  17. 17Vena CavaLargest vein in the body. They return blood to the right atrium of the heart
  18. 18Path of Deoxygenated BloodInferior/Superior Vena Cava --> R Atrium --> Tricuspid Valve --> R Ventricle --> Pulmonary Semi Valve --> Pulm Artery --> Lung Capillaries
  19. 19Path of Oxygenated BloodL Atrium --> Mitral Valve --> L Ventricle --> Aortic Semi Valve --> Aorta --> Arteries --> The Body
  20. 20DiastolePhase of the cardiac cycle when a heart chamber wall relaxes.
  21. 21SystolePhase of the cardiac cycle when a heart chamber wall contracts
  22. 22Sinoatrial NodeSpecialized tissue in the wall of the right atrium that initiates cardiac cycles; the pacemaker; SA Node
  23. 23Atrioventricular NodeSpecialized mass of cardiac muscl fibers in the interatrial septum of the heart: transmits cardiac impulses from the sinoatrial node to the AV bundle; AV node
  24. 24Purkinje FibersSpecialized muscle fibers that conduct the cardiac impulses from the AV bundle into the ventricular walls
  25. 25PacemakerMass of specialized muscle tissue that controls the rhythm of the heartbeat.
  26. 26QRS ComplexShows the contracation (stimulation) of ventricles, atria relax as ventricles contract
  27. 27P WaveDue to contraction (stimulation) of the atria
  28. 28T WaveRelaxation (recovery) of ventricles
  29. 29Electrical ImpulsesKnow as conduction system, come from nerves, stimulate myocardium and determine rate and regularity of heart beat, controlled by sinoartrial node, atrioventricular node and bundle of His
  30. 30Cardiac OutputA series of myocardial contractions and relaxations that constitute a complete heartbeat
  31. 31Stroke VolumeThe volume of blood that each ventricle discharges in a heartbeat
  32. 32Peripheral ResistanceResistance to blood flow due to friction between blood vessel walls
    1. blood viscosity, 2. total blood vessel length, 3. blood vessel diameter
  33. 33BP increaseBlood Flow Increase
  34. 34Resistance IncreaseFlow Decrease
  35. 35Lumenchannel within blood vessels
  36. 36Caused by the vibration and abrupt closure of the AV valves as the ventricles contract; this first sound is of longer duration and lower pitch than the secondFirst, or lub sound
  37. 37Caused by the closing of both the semilunar valves when the ventricles undergo diastole(relax)2nd sound "dub"
  38. 38arterial blood pressure is about120/80
  39. 39Where is the SA node located?R Atrium
  40. 40hemoglobinan iron-containing pigment found in red blood cells, carries 97% of oxygen.
  41. 41Cardiac PlexusA combination of sympathetic and parasympathetic fibers and an area for the brain to talk to the heart.

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FlashCards sobre Cardiovascular System, criado por Kylie Miller em 06-12-2016.
Criado por
Kylie Miller
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