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Cardiovascular System template



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QuestionsAnswers
AV NodeA part of the electrical control system of the heart that coordinates the top of the heart. It electrically connects atrial and ventricular chambers.
AortaAscends from the left ventricle, curvs posteriorly and to the left, then descends through the thorax and abdomen
ArrhythmiaA condition in which the heart beats with an irregular or abnormal rhythm
ArteriesAny of the muscular-walled tubes forming part of the circulation system by which blood (mainly that which has been oxygenated) is conveyed from the heart to all parts of the body
ArteriolesA small branch of an artery leading into capillaries
ArteriosclerosisThe thickening and hardening of the walls of the arteries, occurring typically in old age
AtherosclerosisA disease of the arteries characterized by the deposition of plaques of fatty material on their inner walls
BPBlood pressure
BradycardiaAbnormally slow heart action
CapillariesAny of the fine branching blood vessels that form a network between the arterioles and venules
Cardiac CycleComplete cycle of events in the heart from the beginning of one heart beat to the beginning of the next; an electrical impulse conducted through the heart muscle that constricts the atria which is followed by constriction of the ventricles
DiastoleThe phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood
DiffusionThe spreading of something more widely
Lupp soundRepresents the first heart sound (S1), which is longer and has a lower pitch and is made by the closure of the mitral and tricuspid valves. It is lower in pitch and lasts slightly longer than the second sound
Dupp soundMade by the closure of the aortic valve
EndocardiumThe thin, smooth membrane that lines the inside of the chambers of the heart and forms the surface of the valves
EpicardiumA serous membrane that forms the innermost layer of the pericardium and the outer surface of the heart
IschemiaAn inadequate blood supply to an organ or part of the body, esp. the heart muscles
MyocardiumThe muscular tissue of the heart
Osmotic pressureThe pressure that would have to be applied to a pure solvent to prevent it from passing into a given solution by osmosis, often used to express the concentration of the solution
SA NodePacemaker: a specialized bit of heart tissue that controls the heartbeat
SystoleThe phase of the heartbeat when the heart muscle contracts and pumps blood from the chambers into the arteries
TachycardiaAn abnormally rapid heart rate
VeinsAny of the tubes forming part of the blood circulation system of the body, carrying in most cases oxygen-depleted blood toward the heart
VenulesA very small vein, esp. one collecting blood from the capillaries
cardio-Of or relating to the heart



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