Middle Ear | Gross Anatomy | Part 1/9

#medicines #drnajeeb #pharmacology #medicaleducation #drnajeeblectures #middleear Middle Ear | Gross Anatomy | Part 1/9 Like this video? Sign up now on our website at https://www.DrNajeebLectures.com to access 800+ Exclusive videos on Basic Medical Sciences & Clinical Medicine. These are premium videos (NOT FROM YOUTUBE). All these videos come with English subtitles & download options. Sign up now! Get Lifetime Access for a one-time payment of $19 ONLY! Sign up now on our website at https://members.drnajeeblectures.com/#!/register-fast --------------------------------------------------------------------------------------------------------------------------- Why sign up for premium membership? Here's why! Membership Features for premium website members. 1. More than 800+ Medical Lectures. 2. Basic Medical Sciences & Clinical Medicine. 3. Mobile-friendly interface with android and iOS apps. 4. English subtitles and new videos every week. 5. Download option for offline video playback. 6. Fanatic customer support and that's 24/7. 7. Fast video playback option to learn faster. 8. Trusted by over 2M+ students in 190 countries. --------------------------------------------------------------------------------------------------------------------------- (0:00-4:20) Middle Ear (ME) location in frontal view; External Ear, Tympanic Membrane, Inner Ear. (4:25-8:45) Superior view after removing the skull vault: Anterior, Middle and Poster Cranial Fossae. External, Middle and Inner Ear in superior view.; Petrous part of Temporal bone. (8:49-11:50) Lateral Wall= Membranous wall/Tympanic wall, Anterior Wall= Carotid wall, Medial Wall= Labyrinthine wall, Posterior Wall= Mastoid wall. (11:52-21:58) Sagittal section (Antero-posteriorly); (Upper part of) Anterior Wall= Eustachian Tube/Pharyngotympanic Tube, Posterior Wall= Mastoid Air Cells/Mastoid Antrum, Superior Wall/Roof of ME= Tegmen Tympani. (22:00-26:50) Clinical Co-relate: Roof of ME/Tegmen Tympani; ME infection leaking into Temporal Lobe potentially causing Meningitis, Extra Dural Abscess etc.]. Mastoid Antrum (Posterior wall): Infections/Inflammations here may leak into Posterior Cranial Fossa; Sigmoid Sinus, Brain Stem (BS) & Cerebellum; Thrombophlebitis of Sigmoid Sinus, Infections of BS & Cerebellum. (26:51-30:00) Sagittal section (SC) continued: Inferior Wall/Floor= Jugular Fossa (Jugular bulb of IJV); 9th, 10th & 11th Cranial Nerves, all buried in floor of ME, Tympanic branch of 9th Nerve entering into ME. (30:01-31:20) SC continued:(In front of) Lower part of Anterior Wall= Internal Carotid Artery (ICA), Sympathetic plexus (some branches of it enter into ME). (31:25-32:23) Recap/Summary. --------------------------------------------------------------------------------------------------------------------------- Join this channel to get access to perks: Sign up now on our website at https://members.drnajeeblectures.com/#!/register-fast https://www.youtube.com/channel/UCPHpx55tgrbm8FrYYCflAHw/join Follow us on Facebook :- https://www.facebook.com/DrNajeeb/ Follow us on Instagram :- https://www.instagram.com/drnajeeblectures/