TOPIC: MUSCLES OF HEAD AND NECK – Concise Notes📌 INTRODUCTION🔹The muscles of the head and neck perform crucial roles: facial expression, mastication, speech, swallowing, and neck movements.🔹Classified based on location and function.🔍 MUSCLES OF FACIAL EXPRESSIONSupplied by Facial Nerve (CN VII)Located in subcutaneous tissue – insert into skin, not bone➡️ Main Groups & Examples:Scalp: OccipitofrontalisAround eye: Orbicularis oculiAround nose: NasalisAround mouth: Orbicularis oris, Levator labii, Buccinator, Zygomaticus majorNeck: Platysma🔍 MUSCLES OF MASTICATIONSupplied by Mandibular nerve (V3 of CN V)Insert on mandible – help in chewing (elevation, depression, side movement)
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