(2) Parotid Gland BMC.pdf

Head and Neck Parotid Gland Prof Dr. Mohamed El Fiky Associate professor of anatomy if becauseitssurroundedtheauricle men py.am lowerend fiIfntaaffnita it apex Site, Shape, and Extension of Parotid Gland e It is the largest of the salivary glands. sept Position:1 This is a wedge-shaped gland which l...

Head and Neck Parotid Gland Prof Dr. Mohamed El Fiky Associate professor of anatomy if becauseitssurroundedtheauricle men py.am lowerend fiIfntaaffnita it apex Site, Shape, and Extension of Parotid Gland e It is the largest of the salivary glands. sept Position:1 This is a wedge-shaped gland which lies below the auricle, between e the ramus of the mandible and sternomastoid. The upper end of the gland is in contact with the external acoustic meatus. TpaglaTrotidnd endbaserelatedto upper T Surfaces of the gland: EE reatauricuiarsf 1- Lateral (superficial ) surface. 2- Anteromedial surface. related pitiable r 3- Posteromedial surface. fi ThatatiuscieattachwithfIaffr staloidbon.EE carotiasneatn iE iner E.ir i rter superficialtemporalvein ofthefacialnerve branch temporal I lowerend apex relatedto andposteriordivisionsof anterior posterior facial vein offacialnerve cervical branch m i r.facinnervesive Evagusfi nerve hypoglossal nerve I If cervical branch riorbordaroftheaand t.li IEf MOHAMED EL FIKY to related thelapex MOHAMED EL FIKY Fed Divisions of Parotid Gland : dff Parotid gland is divided into 2 parts by the facial nerve : 1- superficial part. 2- deep part. Facial Nerve Medial Pterygoid e Ramus of Mandible Masseter Accessory Parotid MOHAMED EL FIKY Parotid Fascia Parotid Fascial Compartment Investing layer of Deep Cervical Fascia Parotid Gland MOHAMED EL FIKY Stylomandibular Ligament Parotid Fascia MOHAMED EL FIKY Parotid Gland MOHAMED EL FIKY treated Stylomandibular Ligament e 1- Surfaces : Posteromedial surface Anteromedial surface a- superficial b- anteromedial C- posteromedial Superficial surface Base 2- Borders : 7 Medial border a. anterior b- posterior c-Medial 1 7 3- Base and Apex Posterior border Apex Anterior border MOHAMED EL FIKY Relations of Parotid Gland Mar 1th 1 - R e l at i o n s of t h e Su p e r f i c i a l S ur fa c e 1- skin 2-superficial fascia 3-branchjes of great auricular nerve 4- parotid lymph node 4- Superficial Parotid Lymph Nodes 1- Skin 2- Superficial Fascia and Platysma 3- Great Auricular Nerve 5 deepficical MOHAMED EL FIKY no 2- Relations of Anteromedial surface Medial pterygoid Ramus of mandible Masseter Facial nerve trunk Mastoid process 1- masseter muscle. 2- ramus of the mandible 3- medial ptregoid MOHAMED EL FIKY 3- Relations of Posteromedial surface If B- Styloid Process Stylopharyngeus muscle Styloglossus muscle Stylohyoid muscle A- Mastoid Process Sternomastoid muscle Posterior belly of digastric muscle C- Contents of carotid sheath Internal jugular vein Internal carotid artery Glossopharyngeal nerve Accessory nerve Vagus nerve nerve Hypoglossal nerve MOHAMED EL FIKY 1- relations of anterior Border It Zygomatic branch of facial nerve Transverse facial artery Parotid duct and accessory parotid I Upper buccal branch of facial nerve Lower buccal branch of facial nerve Mandibular branch of facial nerve MOHAMED EL FIKY 1- Relations of the base Temporal branch of facial nerve Superficial temporal Superficial temporal vein artery It Auricultemporal nerve MOHAMED EL FIKY 2- Relations of the apex Posterior facial vein (Retromandibular vein) Cervical branch of facial nerve) MOHAMED EL FIKY Anterior and Posterior divisions of posterior facial vein Posterior belly of External carotid artery)digastric and stylohyoid muscles Structures within the Substance of parotid gland for 1- Terminal part of external carotid artery (deep). 2- Retromandibular vein (intermediate). vein 3- Facial nerve (superficial). nerve artery a- Facial nerve Facial Nerve Temporal BranchZygomatic Branch Upper Buccal Branch Lower Buccal Branch Cervical Branch MOHAMED EL FIKY Mandibular Branch b- Posterior Facial Vein (Reteromandibular) Parotid Posterior Facial Vein (Reteromandibular) MOHAMED EL FIKY c- External carotid and superficial temporal arteries Superficial Temporal artery Parotid External carotid artery MOHAMED EL FIKY Parotid Duct it'sdopiercingfor buccinatormuscle toopen oppositeuppersecondmolar Parotid Papilla MOHAMED EL FIKY Nerve Supply of Parotid Gland see Tympanic Plexus Tympanic Branch Lesser Superficial Petrosal Nerve (Nerve of Jacobson) Otic Ganglion Inferior Salivary Nucleus Auriculotemporal Nerve V3 Parotid Gland External Carotid Artery Glossopharyngeal Nerve Superior Cervical Ganglion MOHAMED EL FIKY 1- Affection of Facial nerve within the Gland If 1- Affection of Facial nerve within the Gland 2- Parotitis (Mumps) viralinfectionofparotidgland foryoung