system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
All of the following structures pierce the buccinator muscle except -
assistant
The correct answer is  Structures piercing the buccinator are :-


Parotid duct
Buccal branch of mandibular nerve
Four or five molor mucous glands lying on the bucco-pharyngeal fascia around the parotid duct.