MCQ – 100908

The first pharyngeal pouch gives rise to which adult structure?

A.	A. Middle ear cavity
B.	B. Thymus
C.	C. Palatine tonsil
D.	D. Inferior parathyroid

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Correct Answer � A Explanation

Option A: Middle ear cavity – Correct

• The first pharyngeal pouch gives rise to:

  • Tympanic cavity (middle ear cavity)

  • Eustachian tube (auditory tube)

• It interacts with the first pharyngeal cleft, which forms the external auditory canal, and the first pharyngeal membrane, which forms the tympanic membrane (eardrum).