This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Muscle responsible for opening of mandibular 
Select and explain. 
A. Lateral pterygoid, B. Medial pterygoid, C. Temporalis, D. Buccinators
A: Lateral pterygoid
Answer: A: Lateral pterygoid 
Explanation: Masseter and medial pterygoid form a amuscular sling which holds and suspends the mandible. By cambining the actions of both muscles in to a functional unit, this sling enables powerful closure of the jaws.