The distance between tympanic membrane and medial wall of middle ear at the level of centre is:
(d) 2mm(Ref. BD Chaurasia, Human Anatomy 6th ed., Vol 3, page 277)Part of the middle ear cavityDistance from lateral to medial wallEpitympanum6mm (widest)Mesotympanum (centre)2mm (narrowest)Hypotympanum4mm
3 mm
4 mm
6 mm
2 mm
Ear