| what atrium is the sinoatrial node in? | right |
| pace maker of the heart | sinoatrial 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 to | internodal pathways |
| internodal pathways to | av node |
| av node to | bundle of his |
| bundle of his to | left or right bundle branch |
| right bundle branch to | Purkinje fibers |
| SA node to left atrium | Bachmann's bundle |
| afterload | amount of pressure a chamber must generate to eject blood |
| preload | the volume of blood in the ventricle at the end of diastole |
| frank-starling | greater 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 syndrome | periods 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 output | amount of blood discharged from the left ventricle per minute in liters. normal is 4-8L |
| define stroke volume | amount 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 block | av node delays impulse longer than .2 seconds |
| second degree heart block | AV node delays signal for progressive periods of time until an impulse is blocked, causes ventricular rates of 20-40 |
| ventricular fibrillation | ventricles quiver, causes cardiac output and blood pressure to decrease |
| aortic arch blood pressure | 120/80 |
| Pulmonary artery blood pressure | 25/10 |
| left atrium blood pressure | 2-12 |
| left ventricle blood pressure | 120/10 |
| right atrium blood pressure | 2-8 |
| right ventricle blood pressure | 25/4 |
| deoxygenated blood O2 saturation | 75% |
| oxygenated blood O2 saturation | 95% |
| type 1 aortic dissection | above aortic valve to abdominal aorta |
| type 2 aortic dissection | aortic valve to ascending aorta |
| second degree heart block type two | some impulses to be blocked and others go through. ventricles bpm is 20-40 |
| left bundle branch to the | left posterior fascicle |
| at the bottom of the left bundle branch | left anterior fascicle |
