Cardiac Cycle

The duration for one cardiac cycle is​ (a)   .

• o.8 secs
• 8 secs
• 0.08 secs
• 80 secs

The cardiac impulse conduction typically starts from ​ (a)   .

• SA node
• AV node

The cardiac impulses travel along this pathway before reaching the Purkinje fibres.

During early ventricular filling phase, the mitral valve ​ (a)   , the aortic valve ​ (b)   .

• opens
• closes

The first heart sound corresponds to ​ (a)   closing.

• AV valves
• aortic and pulmonary valves

During cardiac cycle, the ​ (a)   occur before ​the (b)   .

• electrical events
• mechanical events

Isovolumetric ventricular contraction occurs in ​ (a)   phase.

• early systole
• late systole
• early diastole
• late diastole

The left ventricular pressure is the highest during​ (a)   phase.

• ventricular ejection
• ventricular filling
• isovolumetric ventricular contraction
• isovolumetric ventricular relaxation