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level: last test on these chapters

Questions and Answers List

level questions: last test on these chapters

QuestionAnswer
what atrium is the sinoatrial node in?right
pace maker of the heartsinoatrial node
afterload?pressure created to eject blood from chamber
what part of the heart causes a delay in the SA nodes' signal?AV node
what does HIS do?allows communication between the atriums and ventricles
what is "preload"?amount of blood in ventricles at the end of diastole
what is cardiac out put?the amount of blood discharged from either ventricle per minute
what does an AV block mean?the AV node delays the wave of depolarization for to long
sinoatrial node tointernodal pathways
internodal pathways toav node
av node tobundle of his
bundle of his toleft or right bundle branch
right bundle branch toPurkinje fibers
SA node to left atriumBachmann's bundle
afterloadamount of pressure a chamber must generate to eject blood
preloadthe volume of blood in the ventricle at the end of diastole
frank-starlinggreater the amount of blood in a ventricle the more forceful the contraction because of stretch, until a critical point is reached
what is sick sinus syndromeperiods of bradycardia and tachycardia
pitted edema and swelling of the legs is a sign of?right heart failure
shortness of breath is a symptom of?left heart failure
define cardiac outputamount of blood discharged from the left ventricle per minute in liters. normal is 4-8L
define stroke volumeamount of blood discharged from the left ventricle for one cardiac cycle
where is the SA node?high on the posterior wall of the right atrium
where is the av node?at the bottom part of the right atrial septal wall
first degree heart blockav node delays impulse longer than .2 seconds
second degree heart blockAV node delays signal for progressive periods of time until an impulse is blocked, causes ventricular rates of 20-40
ventricular fibrillationventricles quiver, causes cardiac output and blood pressure to decrease
aortic arch blood pressure120/80
Pulmonary artery blood pressure25/10
left atrium blood pressure2-12
left ventricle blood pressure120/10
right atrium blood pressure2-8
right ventricle blood pressure25/4
deoxygenated blood O2 saturation75%
oxygenated blood O2 saturation95%
type 1 aortic dissectionabove aortic valve to abdominal aorta
type 2 aortic dissectionaortic valve to ascending aorta
second degree heart block type twosome impulses to be blocked and others go through. ventricles bpm is 20-40
left bundle branch to theleft posterior fascicle
at the bottom of the left bundle branchleft anterior fascicle