Which of the following is NOT derived from 1st pharyngeal pouch:: (A) Middle ear, (B) Eustachean tube, (C) Tympanic membrane, (D) Palatine tonsils
Answer is D. Ans. (d) Palatine tonsilsRef. LB. Singh 9th ed. /1118; Fundamental Anatomy By Walter Carl Hartwig /185* First pharyngeal pouch is located between 1st and 2nd pharyngeal arch* Palatine tonsil is a derivative of 2nd pharyngeal pouch* Eustachean tube, Middle ear, mastoid antrum and tympanic membrane is derived from 1st pharyngeal pouch.