Cardiovascular Review Flashcards
The electrical impulses from the SA node cause wave _______________ leading to atrial _________________
Depolarization
Contraction
What does the AV node do
Transmits the impulse from the SA node to the ventricles
Once the electrical impulse travels thru the AV node, the depolarization wave continues thru the ____________ _____________ and ___________ ____________ in the ventricles
Bundle branches
Purkinje fibers
The depolarization wave that travels thru the ventricles causes ventricular contraction which originates at the
Apex
What is the y axis on an ecg
Millivoltage
What is happening during the P wave
Atrial depolarization
What is happening during the P-R interval
Impulse transmitted from the Atria to the AV node
What is happening during the QRS complex
Ventricular depolarization and atrial repolarization
What is happening during the T wave
Ventricular repolarization
Two stages of cardiac contraction
Systole and diastole
