Apr 09, · Classically the muscles of mastication are Masseter Medial Pterygoid Lateral Pterygoid Temporalis Accessory muscles of mastication Anterior belly of digastric Mylohyoid muscle Geniohyiod muscle Buccinator 6. Start studying Muscles of Facial Expression and Mastication. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
derived from 1st branchial arch, mandibular nerve innervation (V3), mandibular division of trigeminal nerve (CN V), ossification occurs around Meckel's cartilage, all 4 muscles of mastication are derived from arch 1 4 True Muscles of Mastication Medial (internal) pterygoid, Lateral (external) pterygoid, Temporalis, Masseter. Jan 05, · Extra-orally, the muscles of mastication move the mandible at the temporomandibular joint while the circumoral muscles of facial expression change the shapes and positions of the lips. In the suprahyoid region, the digastric, mylohyoid and geniohyoid muscles are located in the floor of the mouth.
The buccinator is a facial expression muscle that helps in mastication by keeping food pushed back within the oral cavity. For full details of nerve and vascular supply please see the Facial Muscles - Lower Group page. MUSCLES OF MASTICATION •These are the muscles that move the mandible during mastication, speech °lutition. • They move the mandible quickly & precisely to enable different speech sounds that are to be made in rapid succession and they are also capable of exerting enormous forces that are required to break down tough foods.