Home › DHA Medical Licensing Exam › Physiology › Cardiac Cycle and Output › Roughly how long does ventricular systole last i…
Roughly how long does ventricular systole last in total?
A100 ms
B270 ms
C430 ms
D800 ms
Answer & Solution
Correct answer: B. 270 ms
1. Ventricular systole follows ventricular depolarisation, shown by the QRS complex.
2. It divides into two phases lasting a total of 270 ms.
3. Atrial systole runs about 100 ms and ventricular diastole about 430 ms, the two distractors here.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 19 "The Cardiovascular System: The Heart", section 19.3 | Cardiac Cycle_
Related questions
What is the mean stroke volume for a resting 70 kg individual?Roughly how long does atrial systole last?Why does the left ventricle generate a higher pressure than the right during ejection?What closes the tricuspid and mitral valves early in ventricular systole?What produces the dicrotic notch seen on a blood pressure tracing?Roughly how long does ventricular diastole last?Which principle links ventricular stretch to the force of contraction?How is stroke volume calculated from echocardiogram measurements?