part of part of surrounded by surrounded by surrounds surrounds developmentally replaces developmentally replaces luminal space of auditory ossicle bone middle ear anatomical cavity tympanic cavity http://upload.wikimedia.org/wikipedia/commons/1/19/Gray923.png UBERON:0004114 Wikipedia:Tympanic_cavity middle ear cavity FMA:56461 anatomical cavity of middle ear middle-ear cavity EMAPA:37778 cavitas tympanica EHDAA2:0004119 cavity of middle ear SCTID:362551002 BTO:0002098 Small cavity surrounding the bones of the middle ear. tympanum cavitas tympani tube lumen tubotympanic recess lumen tympanic cavity epithelium open anatomical space