https://stream.echo6.co/videos/watch/13b90547-a6b7-49ce-9261-efbe596e88ff Official Ninja Nerd Website: https://ninjanerd.org Ninja Nerds! In this cardiovascular physiology lecture, Professor Zach Murphy discusses the cardiac cycle, walking you through each mechanical and electrical event that occurs during a single heartbeat. This session integrates pressure, volume, valve function, and heart sounds to help you master this foundational concept. We begin by outlining the phases of the cardiac cycle, including atrial systole, isovolumetric contraction, ventricular ejection, isovolumetric relaxation, and ventricular filling. You’ll learn how these phases are coordinated with ECG events, heart sounds (S1 and S2), and changes in aortic, ventricular, and atrial pressures. The lecture also explores how valve dynamics regulate blood flow—detailing the opening and closing of the mitral, tricuspid, aortic, and pulmonary valves and how these actions generate the normal heart sounds and potential murmurs. Enjoy the lecture and support us below! 🌐 Official Links Website: https://www.ninjanerd.org Podcast: https://podcast.ninjanerd.org Store: https://merch.ninjanerd.org 📱 Social Media https://www.tiktok.com/@ninjanerdlectures https://www.instagram.com/ninjanerdlectures https://www.facebook.com/ninjanerdlectures https://x.com/ninjanerdsci/ https://www.linkedin.com/company/ninja-nerd/ 💬 Join Our Community Discord: https://discord.gg/3srTG4dngW #ninjanerd #cardiaccycle #cardiovascular Wed, 15 Apr 2026 09:24:04 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://stream.echo6.co https://stream.echo6.co/client/assets/images/icons/icon-512x512.png https://stream.echo6.co/videos/watch/13b90547-a6b7-49ce-9261-efbe596e88ff All rights reserved, unless otherwise specified in the terms specified at https://stream.echo6.co/about and potential licenses granted by each content's rightholder.