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The murmur from HOCM is from the mitral valve leaflet jamming into the septum, also called systolic anterior motion (SAM). This disappears when you increase the volume of LV because if you increase the volume, the ventricle becomes more distended and the leaflet is further away from the septum, so you have less murmur that can be heard. MVP murmur decreases ...


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High-pressure baroreceptors are in the part of the circulatory system with blood pressures higher than 60 mm Hg - in the aortic arc and in the carotid sinus at the bifurcation of the carotid artery. Their activation by high blood pressure results in a decreased heart rate and vasodilation and hence in a drop of blood pressure. Low-pressure baroreceptors are ...


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