Toynbee test is used to the function of -: (A) Eustachian tube, (B) Tympanic membrane, (C) Middle ear, (D) Semicircular canal
Answer is A. Ans. is 'a' i.e., Eustachian tube Tests for Eustachian tube patency* Valsalva test* Methylene blue test* Sonotubometry* Politzer test* Toynbee test* Frenzel maneuver* Catheterization* Inflation - Deflation test