The tympanic cavity and the auditory tube are derived from which pharyngeal pouch?

• A Second pharyngeal pouch
• B First pharyngeal pouch ✓
• C Third pharyngeal pouch
• D Fourth pharyngeal pouch

Explanation

The first pharyngeal pouch forms the tympanic cavity and the auditory tube. The second pouch forms the palatine tonsil. The third pouch forms the thymus and inferior parathyroids. The fourth pouch forms the superior parathyroids and the ultimobranchial body, which gives rise to the parafollicular C cells of the thyroid.

Reference: Gray's Anatomy for Students, 4th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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