alleryStart learning →Roughly how long does atrial systole last?
A100 ms
B270 ms
C430 ms
D600 ms
Answer & Solution
Correct answer: A. 100 ms
1. Atrial systole tops the ventricles up before they contract.
2. It lasts approximately 100 ms and ends prior to ventricular systole.
3. The atrial muscle then returns to diastole while the ventricles work.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 19 "The Cardiovascular System: The Heart", section 19.3 | Cardiac Cycle_
Keep practising Cardiac Cycle and Output
Browse all Cardiac Cycle and Output questions for DHA Medical Licensing Exam, or explore more Physiology topics.
Related questions
Key in the cardiac numbersOrder the cardiac cycleCardiac cycle bingoWhat is the mean stroke volume for a resting 70 kg individual?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?