Health Sciences 2300A/B Study Guide - Final Guide: Clavicle, Epiglottis, Mastoid Part Of The Temporal Bone

• School: Western University
• Department: Health Sciences
• Course: Health Sciences 2300A/B
• Professor: Jamie Melling

Document Summary

One central tendon holds them together: epicranius (epicranial aponeurosis; aponeurosis = sheet-like tendon) Winking muscle > allows you to close your eyes. Attaches to zygomatic process and corner of the mouth. Mandibular angle to the corner of the mouth. More involved in chewing although can alter the face as well *complex attachments to skin, fascia, and sometimes bone. Arises in the brainstem: enters the internal acoustic meatus (like a foramen, gap where skull bones articulate), leads into a passageway in the temporal bone, exits the stylomastoid foramen. Has 5 main branches: temporal, zygomatic, buccal, mandibular, cervical. This pressure must be relieved or there will be permanent nerve damage. Innervation: mandibular nerve (mandibular branch of the trigeminal nerve: cn v-iii. Attaches to zygomatic process and angle of the mandible. Attaches to temporal bone and coranoid process of mandible. In this chart as it is involved in chewing. Moves jaw side to side, moves cheeks inwards.