tympanic sulcus [Gk, tympanon, drum; L, sulcus, furrow] , a narrow circular groove at the medial end of the osseous part of the external acoustic meatus that holds the tympanic membrane.
tympanic sulcus
tympanic sulcus [Gk, tympanon, drum; L, sulcus, furrow] , a narrow circular groove at the medial end of the osseous part of the external acoustic meatus that holds the tympanic membrane.