后骨半规管
/pɒstˈiəɹiə sˌɛmɪsˈɜːkjʊlə kənˈal/
n
English: posterior semicircular canal · 后骨半规管
English · posterior semicircular canalEspañol · conducto semicircular posteriorFrançais · canal semi-circulaire postérieur
释义：Vertical canal parallel to the temporal bone; it monitors head movements to ensure that equilibrium is maintained.