floor

floor (flor)

The lower inner surface of an open space or hollow organ.
f. of orbit the floor of the orbit; the shortest of the four walls of the orbit, sloping upward from the orbital margin; it is comprised of the maxilla and orbital process of the palatine bone.paries inferior orbitae [NA], inferior wall of orbit;
f. of tympanic cavity the floor of the tympanic cavity; a thin plate of bone separating the tympanic cavity from the jugular fossa.paries jugularis cavi tympani [NA], fundus tympani, inferior wall of tympanic cavity, jugular wall of middle ear;

 

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