Question: the function of the semicircular canals​ is

title: Semicircular canals
text: Each canal is filled with a fluid called endolymph and contains motion sensors within the fluids . At the base of each canal , the bony region of the canal is enlarged which opens into the utricle and has a dilated sac at one end called the osseous ampullae . Within the ampulla is a mound of hair cells and supporting cells called crista ampullaris . These hair cells have many cytoplasmic projections on the apical surface called stereocilia which are embedded in a gelatinous structure called the cupula . As the head rotates the duct moves but the endolymph lags behind owing to inertia . This deflects the cupula and bends the stereocilia within . The bending of these stereocilia alters an electric signal that is transmitted to the brain . Within approximately 10 seconds of achieving constant motion , the endolymph catches up with the movement of the duct and the cupula is no longer affected , stopping the sensation of acceleration . The specific gravity of the cupula is comparable to that of the surrounding endolymph . Consequently , the cupula is not displaced by gravity , unlike the otolithic membranes of the utricle and saccule . As with macular hair cells , hair cells of the crista ampullaris will depolarise when the stereocilia deflect towards the kinocilium . Deflection in the opposite direction results in hyperpolarisation and inhibition . In the horizontal canal , ampullopetal flow is necessary for hair - cell stimulation , whereas ampullofugal flow is necessary in the anterior and posterior canals . 

Answer: answer: Each semicircular canal is filled with a fluid called endolymph and contains motion sensors within the fluids . At the base of each canal , the bony region of the canal is enlarged which opens into the utricle and has a dilated sac at one end called the osseous ampullae . In the horizontal canal , ampullopetal flow is necessary for hair - cell stimulation , whereas ampullofugal flow is necessary in the anterior and posterior canals .