This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
Muscle of mastication are derived from 
Select and explain. 
A. 1st arch, B. 2nd arch, C. 3rd arch, D. 4th arch
A: 1st arch
Answer: A: 1st arch 
Explanation: First pharyngeal arch is also called mandibular archMUSCLES-Temporalis, Lateral pterygoid, Medial pterygoid, Masseter, Mylohyoid, Anterior belly of digastric, Tensor tympani, Tensor palatiSKELETAL ELEMENTS-Premaxilla,maxilla,zygomatic,temporal,Meckel&;s cailageLIGAMENTS-Anterior ligament of malleus, sphenomandibular ligamentNERVE-Mandibular nerveAERY-Maxillary aery