Following atrial systole, ventricular systole occurs when both ventricles contract forcefully.This phase has two distinct periods. First is isovolumetric contraction, where ventricular pressure rises rapidly, causing the AV valves to close.Once ventricular pressure exceeds arterial pressure, the semilunar valves open, initiating ventricular ejection. Blood is propelled from the right ventricle into the pulmonary artery and from the left ventricle into the aorta.Ventricular systole lasts about zero point three seconds and is marked by the 'second heart sound' or 'dub' when the semilunar valves close at the end of this phase.
Explore
Discover the full suite of AI-powered study tools designed to help you learn smarter.
Create notes from your material in seconds.
Take live notes and ask questions, hands-free.
Make flashcards from your material in one click.
Create and practice quizzes from your material.
Simulate the real exam with full-length tests.
Break your material into a clear learning path.
A real-time tutor that adapts to how you learn.
Talk to your personal AI tutor in real time.
Ask about the pictures and diagrams in your notes.
Call Spark.E to discuss your study material.
Turn your materials into a podcast or summary.
Grade essays with personalized feedback and tips.
Plan study sessions and hit your academic goals.
Play community-built study games or make your own.
