Control of heart rate

The Cardiac conduction system starts at which of the following locations?

• AV Node

• Bundle of His

• Purkinje fibers

• SA Node

The pacemaker of the heart is the _________

• AV node

• SA node

• Bundle of His

• Purkinje Fibre

Which is the correct path of electrical impulses through the heart?

• SA → Purkinje Fibres → Bundle of HIS → AV → Bundle Branches

• SA → AV → Bundle of HIS → Bundle Branches → Purkinje Fibres

• AV → Bundle of HIS → SA → Bundle Branches → Purkinje Fibres

• Bundle of HIS → AV → Bundle Branches → SA → Purkinje Fibers

What is part is labelled A

• AV Node

• SA Node

• Purkinje Fibres

• Bundle of HIS

• Bundle Branches

What is part is labelled B

• AV Node

• SA Node

• Bundle Branches

• Bundle of HIS

• Purkinje Fibres

What is part is labelled C

• AV Node

• SA Node

• Bundle Branches

• Purkinje Fibres

• Bundle of HIS

What is part is labelled D

• AV Node

• SA Node

• Bundle Branches

• Purkinje Fibres

• Bundle Branches

The SA Node sends what?

• Electrical Impulses

• Messages

• Hormones

• Oxygen

The Purkinje Fibres cause what to happen?

• Ventricles to contract

• Atria to contract

• Allows blood to move between atria and ventricles

• Separates the heart

Where is the SA Node Located?

• Left Atrium

• Right Atrium

• Left Ventricle

• Right Ventricle