This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
Which muscle has fibers that enter the aicular disc and capsule? 
Select and explain. 
A. Medial pterygoid, B. Buccinator, C. Temporalis, D. Lateral pterygoid
D: Lateral pterygoid
Answer: D: Lateral pterygoid 
Explanation: Only the lateral pterygoid enters the temporomandibular joint (TMJ). Its fibers join the aicular disc and capsule.