<prompt> Most important sensory organ in the ampulla is:Organ of cortiMaculaOtolithCrista  <response>: Ans:D Crista Ref: Pal GK. Vestibular apparatus. In: Textbook of medical physiology. Abuja publishing house. 2007: 116: 886-88.Explanation:Receptor structureReceptor organDetected stimuliOtolith organs SacculeMacuiaGravitation linear accelerationUtricleMaculaGravitation linear accelerationSemicircular canals Horizontal canalAmpullaRotational accelerationAnterior canalAmpullaRotational accelerationPosterior canalAmpullaRotational accelerationNote:Macula - Sensory epithelium in saccule and utricle which contain hair cellsOtolith or otoconia - calcium carbonate crystals in otolith membraneEach ampulla contains Crista ampularis in which hair cells are located. These hair cells are embedded in a gelatinous mass cupula which does not contain otolithsOrgan of corti - loeaed in middle ear; involved in audition 