In ECG, QRS wave represents:
Correct answer: A. Ventricular systole
- A. Ventricular systole
- B. Atrial systole
- C. Diastole
- D. Recovery systole
Explanation
The QRS complex represents depolarization of the ventricles and is followed by ventricular contraction which is collectively known as the ventricular systole.
Last updated
About Cardiac Cycle and Heartbeat
The cardiac cycle describes atrial systole, ventricular systole and diastole, including pressure changes, blood movement and the opening or closing of heart valves. It also covers the conduction pathway from the sinoatrial node through the atrioventricular node, bundle of His and Purkinje fibres, and relates these events to heartbeat sounds.
Practise Circulation
695 free Circulation MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.