has part has part has_part characteristic of has modifier pressoreceptor cell abnormal sympathetic nervous system physiology abnormal baroreceptor physiology MP:0004184 MPheno.ontology abnormal baroreflex function any functional anomaly of the sensory nerve endings found in the wall of the atria of the heart, vena cava, aortic arch and carotid sinus that are sensitive to changes in blood pressure abnormal pressoreceptor physiology abnormal functionality