Cardiac conduction steps
What are the areas cardiac conduction travel through
1. SA node 2. AV node 3. Bundle of his 4 right and left bundle branches 5. Purkinje fibers
What happens after the impulses occur in the SA node
A inter atrial bundle of conducting fibers rapidly conduct the impulses to the left atrium, and both atria begin to contract
When does the impulse pick up speed and travel down the BUNDLE of his?
After passing through the AV node
Cardiac conduction 2nd thing to happen
Bundle of fibers rapidly conducts impulses to (L) atrium, and both atria begin to contract
Cardiac conduction 1st thing to happen
Cardiac impulse happens in the SA node
What is the first thing to happen in cardiac conduction
Normal impulses arise in the SA node from its spot in the right atrium
What happens after the av bundle branches into the right and left bundle branches
Punkinje fibers conduct the impulses throughout the muscle of both ventricles, causing them to contract almost simultaneously
Cardiac conduction 6th thing to happen
Purkinje fibers conduct the impulses throughout the muscle of both ventricles, causing them to contract almost simultaneously
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SA node AV node Bundle of his Right and left bundle branches Purkinje fibers
Cardiac conduction 5th thing to happen
The AV bundle branches Into the right and left bundle branches
Cardiac conduction 4 th thing to happen
The impulse picks up speed, and travels down the BUNDLE of HIS
Cardiac conduction 3 rd thing to happen
When it enters the AV node, it slows down a lot to allow the atria time to contract and the ventricles fill with blood.