Floor of middle ear cavity is in relation with:
(b) Bulb of the internal jugular vein(Ref. Cummings, 6th ed., 1983)The floor of middle ear cavity is a thin plate of bone separating the middle ear from jugular bulb below.Internal carotid artery is in relation to the anterior wall of middle ear.Sigmoid sinus is not related directly with middle ear cavity. It lies posterior to the mastoid antrum.Round window lies postero-inferiorly on the medial wall of middle ear.
Internal carotid artery
Bulb of the internal jugular vein
Sigmoid sinus
Round window
Ear