This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head & Neck, Subject name: Anatomy
Parotid duct pierces which muscle? 
Select and explain. 
A. Buccinator, B. Lateral Pterygoid, C. Medial Pterygoid, D. Risorius
A: Buccinator
Answer: A: Buccinator 
Explanation: Ans. is 'a' i.e., Buccinator * Structures piercing the buccinator arei) Parotid ductii) Buccal branch of mandibular nerveiii) Four or five mucous glands lying on the bucco-pharyngeal fascia around the parotid duct.