Cardiac Cycle and Heart

what is E

• SA node

• tracks to AV node

• bundle of His

• purkinje Fibre

the correct order of heart conduction is ...

• AV node-SA node-Bundle of his-Bundle branches-Purkinje network

• SA node-AV node-Bundle of his-Bundle branches-Purkinje network

• SA node-AV node-Bundle branches-Bundle of his-Purkinje network

• AV node-SA node-Bundle branches-Bundle of his-Purkinje network

in atrial systole

• atrial contracts

• bicuspid valve open

• tricuspid valve open

• blood pumped into ventricles

in first phase of ventricular systole

• ventricles contracts

• bicuspid valve closed

• tricuspid valve closed

• blood pumped out

'signal assembly point'

• SA node

• AV node

• bundle of his

• purkinje fibres

what is B

• SA node

• tracks to AV node

• bundle of His

• purkinje Fibre

what is C

• SA node

• tracks to AV node

• bundle of His

• purkinje Fibre

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

What is going on in the heart during the P wave

• SA node triggers depolarization in atria

• AV node triggers depolarization in ventricle, the main pumpung action

• Delay caused by the SA node

• Repolarization of the ventricle 

Which letter/s of the ECG shows the ventricles contracting.....

• P

• QRS

• ST