(G) Describe how a cardiac impulse travels through the heart. (a) Draw a diagram of the different portions of this conduction system and label each part. How long does it take for the impulse to...

(G) Describe how a cardiac impulse travels through the heart.

(a) Draw a diagram of the different portions of this conduction system and label each part. How long does it take for the impulse to travel from the SA node to the AV node, Bundle of His, bundle branches, and Purkinje fibers?

(b) Describe the anatomy of the AV bundle.

(c) Why is conduction faster in some parts of the heart when compared to others? Where is conduction the fastest, and what is the speed there? Where is the conduction slowest, and what is its speed there?