Shortest length of middle ear:: (A) 2 mm, (B) 4 mm, (C) 6 mm, (D) 1 cm
Answer is A. Ans. (a) 2 mmRef: Dhingra's ENT 6th ed./ 9-10* Length of middle ear canal:# Epitympanum- 6mm# Mesotympanum- 2mm# Hypotympanum- 4mm* Shortest distance between tympanic membrane to promontory: 2mm.