@@DrEldersAnatomyChannel The actual valves make no noise. That would not make physiological sense. These are very small pieces of tissue. The sounds comes not from the mechanical opening or closing, but from the blood turbulence resulting from them suddenly closing due to pressure changes. These are not metal valves like in your cars engines or in a water hose system. You can think of heart murmurs the same way. The sounds that you can auscultate in diagnosing heart murmurs are not sounds of the valve but sounds of the blood rushing through the closed valve. The valve is not making the noise, the turbulent blood is.
@@matthewbeeler3354The lub-dub sounds are caused by vibrations set up within the walls of ventricles and the major arteries during valve closure, not by the valves snapping shut. The heart murmurs are then produced by the turbulent flow but in a normal heart, the flow is laminar and it does not produce any audible sound
So in case of DUB, when exactly is the sound produced? Is it when blood gushes out (opening of the valves) or when the valves close?
Valves close.
Simple and clear explanation loved it!! Helped me ✨
Thank you and thanks for watching
Thank you very much sir
You’re welcome
This is not correct....the sound is from blood turbulence. It is not from the sound of the valves closing.
Do you have a source for that? Everything I have learned said it was from the valves closing. I'm willing to update if you are correct. Thank you sir
@@DrEldersAnatomyChannel The actual valves make no noise. That would not make physiological sense. These are very small pieces of tissue. The sounds comes not from the mechanical opening or closing, but from the blood turbulence resulting from them suddenly closing due to pressure changes. These are not metal valves like in your cars engines or in a water hose system. You can think of heart murmurs the same way. The sounds that you can auscultate in diagnosing heart murmurs are not sounds of the valve but sounds of the blood rushing through the closed valve. The valve is not making the noise, the turbulent blood is.
@@DrEldersAnatomyChannel You're both right, blood turbulence happens when the valve opens and pushes the blood into the right ventricle.
@@matthewbeeler3354The lub-dub sounds are caused by vibrations set up within the walls of ventricles and the major arteries during valve closure, not by the valves snapping shut. The heart murmurs are then produced by the turbulent flow but in a normal heart, the flow is laminar and it does not produce any audible sound
to be fair at a highschool level he is correct but you are also very correct!