The perils of the sinus tympani.
D004429:Ear Ossicles / Q000033:anatomy & histology; D004432:Ear, Middle / Q000033:anatomy & histology*; D005154:Facial Nerve / Q000033:anatomy & histology; D006801:Humans; D013701:Temporal Bone / Q000033:anatomy & histology*; D014432:Tympanic Membrane