Cardiac Cycle and Heart Anatomy

What part of the electrical conduction system is labelled A?

• SA Node

• AV Node

• AV Bundle

• Bundle Branches

• Purkinje Fibers

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

Order the phases an action potential travels in the conduction system

• SA node--> AV bundle branches--> AV node--> Purkinje fibers
• SA node--> AV node--> AV bundle branches-->  Purkinje fibers
• Av bundle branches--> AV node--> SA node--> Purkinje fibers
• Purkinje fibers--> SA node--> AV node--> AV bundle branches

The pacemaker of the heart is also known as the....

• AV node
• SA node
• Purkinje fibres
• Bundle of His

The AV node is located at...

• A
• B
• C
• D

The chamber that receives oxygenated blood from the lungs

• Right Ventricle

• Left Ventricle

• Right Atrium

• Left Atrium

Identify part numbers 3 and 5.

• 3: right atrium; 5: aorta

• 3: left atrium; 5: aorta

• 3: right atrium; 5: pulmonary artery

• 3: left atrium; 5: pulmonary artery

What number is representing the aorta?

• 1

• 2

• 3

• 4

• 8

The AV node is located at...

• A
• B
• C
• D

 This triggers contraction in the atria

• SA node
• AV node
• QT node
• AV Bundles