NEET PG DENTAL EXAM

Detailed explanation-1: -The external auditory meatus arises from the dorsal portion of the first pharyngeal groove. The meatus first develops as an invagination of ectoderm between the first and second pharyngeal arches that extends toward the developing middle ear structures.

Detailed explanation-2: -The external acoustic meatus consists of the lateral (outer) cartilaginous part, referred to as the cartilaginous or membranous external acoustic meatus, and the medial (inner) bony part, called the bony external acoustic meatus.