pharyngeal opening of auditory tube

pha·ryn·ge·al o·pen·ing of au·di·to·ry tube

(făr-in'jē-ăl ō'pĕn-ing aw'di-tōr-ē tūb)
An opening in the upper part of the nasopharynx about 1.2 cm behind the posterior extremity of the inferior concha on each side.