system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Which aery is palpated at the anterior border of masseter?
assistant
The correct answer is  Masseter muscle covers the lateral surface of ramus of mandible which has three layers ORIGIN- Superficial layer: from anterior two third of zygomatic arch Deep layer: from deep surface of zygomatic arch Middle layer: from lower border of posterior one-third of zygomatic arch INSEION- Superficial fibers pass downwards and backward at 45 degree Deep fibers pass veically downwards Middle fibers pass or veically downwards NERVE SUPPLY- By masseteric nerve, a branch of anterior division of mandibular nerve ACTIONS- Elevates mandible to close the mouth to bite Superficial fibers cause protrusion Ref BDC volume 3,sixth edition pg 116