has part has part has_part characteristic of part of has modifier abnormal mechanoreceptor morphology abnormal baroreceptor morphology any structural anomaly in the sensory nerve endings in the wall of the atria of the heart, vena cava, aortic arch and carotid sinus that are sensitive to changes in blood pressure MP:0004118 MPheno.ontology abnormal pressoreceptor morphology morphology abnormal baroreceptor