Cardiac Cycle and Conduction

What part of the electrical conduction system is labelled A?

• SA Node

• AV Node

• AV Bundle

• Bundle Branches

• Purkinje Fibers

What part of the electrical conduction system is labelled D?

• SA Node

• AV Node

• AV Bundle

• Bundle Branches

• Purkinje Fibers

Which letter is representing the cluster of cells that are autorhythmic, send the signal down the bundle branches and have a bpm of 20-40?

• A

• B

• C

• D

• E

Which letter is representing the Purkinje fibers which are the final area of signal transmission before the ventricles completely contract?

• A

• B

• C

• D

• E

What part of the heart is number 10?

What number is representing the aorta?

• 1

• 2

• 3

• 4

• 8

Where does blood go after it leaves number 9?

All of the following occur when the ventricles contract except

• the AV valves close
• blood is ejected into the aorta
• the semilunar valves open
• blood from the pulmonary trunk enters the atria

During atrial contraction and ventricular filling,

• the AV valves are open
• the semilunar valves are open
• the ventricles are contracted
• the atria are relaxed

What is the definition of the Cardiac Cycle?

• the contraction of the atria
• the sequence of events that occur during one complete heartbeat
• the contraction and relaxation of the ventricles
• the circulation of blood in the heart