The course of this part is just not just a straight line, curving initial slightly up and to the back to begin with, in advance of bending ahead and down. The interior portion—representing about two-thirds of its class—is surrounded by temporal bone and terminates within the tympanic membrane (see beneath). https://codybzplf.ageeksblog.com/5665815/the-single-best-strategy-to-use-for-ear-problems-prevention