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Cardio - EKGs
Question | Answer |
---|---|
AV node | takes signal from SA node.. slows signal down regulate it sending to bundle of his |
bundle of his | transmits impulses from AV nodes --> ventricles |
intercalated discs | allows heart to function as synctium |
atria | receive blood from bdy |
ventricles | pushing chambers - push out blood |
what is the conduction pathway? | SA node --> AV node --> bundle of his --> purkinje fibers |
chronotropic | rate |
inotropic | contractility |
dromotropic | conduction |
frank starling law | more the heart fills, the stronger the contraction |
preload | volume of blood in ventricles before contraction, EDV. |
afterload | volume of blood in heart after contraction, ESV. |
potassium is ___ in the cell | high |
which ions are low in concentration in the cell? | calcium. sodium. chloride |
p wave represents | atrial depolarization |
qrs complex represents | ventricular depolarization |
t wave represents | ventricular re-polarization |