#drnajeeb #medicines #pharmacology #cardiology #cardiachealth S1 Heart Sounds and Murmurs | First Heart Sound | Dr Najeeb🫀 Like this video? Sign up now on our website at https://www.DrNajeebLectures.com/ to access 800+ Exclusive videos on Basic Medical Sciences & Clinical Medicine. These are premium videos (NOT FROM YOUTUBE). All these videos come with English subtitles & download options. Sign up now! Get Lifetime Access for a one-time payment of $99 ONLY! Sign up now on our website at https://members.drnajeeblectures.com/#!/register-fast --------------------------------------------------------------------------------------------------------------------------- Why sign up for premium membership? Here's why! Membership Features for premium website members. 1. More than 800+ Medical Lectures. 2. Basic Medical Sciences & Clinical Medicine. 3. Mobile-friendly interface with android and iOS apps. 4. English subtitles and new videos every week. 5. Download option for offline video playback. 6. Fanatic customer support and that's 24/7. 7. Fast video playback option to learn faster. 8. Trusted by over 2M+ students in 190 countries. --------------------------------------------------------------------------------------------------------------------------- ▬▬▬▬▬▬▬▬▬▬ Contents of this video ▬▬▬▬▬▬▬▬▬▬ 00:00:00 Introduction 00:01:31 Heart structure and concept of heart cycle 00:09:35 Mechanism of genesis of S1 and concept of vibration Components of first heart sound S1 Does the opening of valves produce sound? Opening snap, clicks The first heart sound (S1) represents closure of the atrioventricular (mitral and tricuspid) valves as the ventricular pressures exceed atrial pressures at the beginning of systole (point a). S1 is normally a single sound because mitral and tricuspid valve closure occurs almost simultaneously. --------------------------------------------------------------------------------------------------------------------------- Join this channel to get access to perks: Sign up now on our website at https://members.drnajeeblectures.com/#!/register-fast null Follow us on Facebook :- https://www.facebook.com/DrNajeeb/ Follow us on Instagram :- https://www.instagram.com/drnajeeblectures/