'The heart has 4 of these to regulate the flow of blood, including the mitral'
Valves
THE TELL-TALE HEART: The heart has 4 of these to regulate the flow of blood, including the mitral
The heart has 4 of these to regulate the flow of blood, including the mitral
The heart has 4 of these to regulate the flow of blood, including the mitral
THE TELL-TALE HEART
Valves
THE TELL-TALE HEART