Source:http://linkedlifedata.com/resource/umls/id/C1323109
CSP: consists of three oval ducts arranged at right angles to one another; integral part of the equilibrium mechanism.,MSH: The three membranous semicircular ducts within the bony semicircular canals. They open into the UTRICLE through five openings. Each duct has at one end a sensory area called the ampullary crest. AMPULLARY HAIR CELLS of the crests sense the movement of ENDOLYMPH resulting from rotation of the head.