Cardiac Cycle and Electrocardiogram

What part of the electrical conduction system is labelled A?

• SA Node

• AV Node

• AV Bundle

• Bundle Branches

• Purkinje Fibers

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 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

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

• AV node

• SA node

• Purkinje fibres

• Bundle of His

A flap of tissue that prevents blood from flowing backward

• Aorta

• Atrium

• Septum

• Valve

Tags

NGSS.HS-LS1-3

 This triggers contraction in the atria

• SA node

• AV node

• QT node

• AV Bundles

This triggers contraction in the ventricle

• SA node

• AV node

• QT node

• AV Bundles

The heart is

• A double pump

• Myogenic

• Generates its own electrical pulse

• All of the above

Tags

NGSS.HS-LS1-3

During the Cardiac Cycle, Ventricular systole is when what happens?

• The Left Ventricle contracts

• When the Right Ventricle contracts

• When the Atria contract

• When both Ventricles contract

During the Cardiac Cycle the diastole phase is when?

• The heart is fully contracted

• The heart is fully relaxed

• When the atria are relaxed and Ventricles contracted

• All of the above

Tags

NGSS.HS-LS1-3