logging in or signing up inner ear anatomy ppt. Dr Javed shah FRCS ,Bannu Medical College jisent Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 1146 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: September 27, 2011 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Anatomy of inner Ear: Anatomy of inner Ear Inner Ear Lies in Petrous part of temporal bone. Inner Ear consist of two Parts 1/ Bony (Osseous ) Labyrinth. 2/ Membranous LabyrinthSlide 2: Embryology: Thickening of ectoderm. Pit and vesicle formation,sinks deep to mesenchyma. Pit and then vesicle, sinks to deep mesenchyma Embryology: Thickening of ectoderm.Slide 3: The vesicle forms Membranous Labyrinth The surrounding Mesenchyma forms the Bony Labyrinth, Hardest bone. Perilymphatic spaceSlide 4: Perilymph Bony(osseous labyrinth): Bony(osseous labyrinth) Vestibule: central area between lateral termination of IAM and tympanic cavity. Size: ASpirin tablet. Communicates anteriorly with scala vestibule And posteriorly with 5 openings of SCC>Slide 6: Medial wall of vestibule: 8th nerve Lateral wall, oval window and round window.Slide 8: Medial wall of vestibule. perforations for 8th nerve. The front half of medial wall has Saccule of membranous labyrinth the posterior half contains Utricle orifice of aqueduct of vestibule.Slide 10: The Semicircular Canals: Posterior end of bony Labyrinth. 3 SCC, Lateral, Posterior and Superior, 2/3 of a circleSlide 11: Each canal has 2 opening to vestibule one opening of each canal is dilated called Ampulary end Non ampulary ends of Posterior and superior canal make common opening. total 5 openings to vestibule Cochlea: Cochlea Anterior part of bony labyrinth Hollow tube taking 2and3/4 turn round Modiolus. where the tube is applied to modiolus ,crest of bone like flange of screw projects to lumen dividing almost to 2 tube, HelicotremaSlide 13: Modiolus abuts on the cholera area of IAM Cochlear nerve enters in the centre and periphery. distance from base to apex is 5 mm. length of cochlear duct is 30 mm.Slide 14: Scala vestibule scala tympani Membranous Labyrinth: Membranous Labyrinth Otic vesicle. 2 out growths Anterior forms cholera duct(scala media)and endolymphatic duct and sac Posterior part forms sacule,utricle and 3 scc .Slide 16: Semicircular canals. superior and lateral have 3 openings, crus commune and 2 ampulary ends,lat scc have 2 openings to utricle . total 5 opening to utricle.Slide 17: Cochlear duct . starts at saccule by canalis reunion. Basilar membrane,attaches to spiral lamina aand lateral wall of bony cochlea.and divide the chclear duct to scala vestibule and tympaniSlide 18: basilar membrane epithelium show modification ,organ of corti Scala media triangular on sectionSlide 20: Sensory areas in membranous ssc and cochlea. 1/ Crista ampullaris of ssc 2/Macula in utricle and saccule. 3/organ of cortiSlide 21: Blood supply of internal Ear. internal auditory artery, branch of anterior cerbellar artery, cochlear and vestibular branches veins of same name drain to petrosal sinusSlide 22: Vestibular cochlear nerve. You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
inner ear anatomy ppt. Dr Javed shah FRCS ,Bannu Medical College jisent Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 1146 Category: Entertainment License: All Rights Reserved Like it (0) Dislike it (0) Added: September 27, 2011 This Presentation is Public Favorites: 1 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Anatomy of inner Ear: Anatomy of inner Ear Inner Ear Lies in Petrous part of temporal bone. Inner Ear consist of two Parts 1/ Bony (Osseous ) Labyrinth. 2/ Membranous LabyrinthSlide 2: Embryology: Thickening of ectoderm. Pit and vesicle formation,sinks deep to mesenchyma. Pit and then vesicle, sinks to deep mesenchyma Embryology: Thickening of ectoderm.Slide 3: The vesicle forms Membranous Labyrinth The surrounding Mesenchyma forms the Bony Labyrinth, Hardest bone. Perilymphatic spaceSlide 4: Perilymph Bony(osseous labyrinth): Bony(osseous labyrinth) Vestibule: central area between lateral termination of IAM and tympanic cavity. Size: ASpirin tablet. Communicates anteriorly with scala vestibule And posteriorly with 5 openings of SCC>Slide 6: Medial wall of vestibule: 8th nerve Lateral wall, oval window and round window.Slide 8: Medial wall of vestibule. perforations for 8th nerve. The front half of medial wall has Saccule of membranous labyrinth the posterior half contains Utricle orifice of aqueduct of vestibule.Slide 10: The Semicircular Canals: Posterior end of bony Labyrinth. 3 SCC, Lateral, Posterior and Superior, 2/3 of a circleSlide 11: Each canal has 2 opening to vestibule one opening of each canal is dilated called Ampulary end Non ampulary ends of Posterior and superior canal make common opening. total 5 openings to vestibule Cochlea: Cochlea Anterior part of bony labyrinth Hollow tube taking 2and3/4 turn round Modiolus. where the tube is applied to modiolus ,crest of bone like flange of screw projects to lumen dividing almost to 2 tube, HelicotremaSlide 13: Modiolus abuts on the cholera area of IAM Cochlear nerve enters in the centre and periphery. distance from base to apex is 5 mm. length of cochlear duct is 30 mm.Slide 14: Scala vestibule scala tympani Membranous Labyrinth: Membranous Labyrinth Otic vesicle. 2 out growths Anterior forms cholera duct(scala media)and endolymphatic duct and sac Posterior part forms sacule,utricle and 3 scc .Slide 16: Semicircular canals. superior and lateral have 3 openings, crus commune and 2 ampulary ends,lat scc have 2 openings to utricle . total 5 opening to utricle.Slide 17: Cochlear duct . starts at saccule by canalis reunion. Basilar membrane,attaches to spiral lamina aand lateral wall of bony cochlea.and divide the chclear duct to scala vestibule and tympaniSlide 18: basilar membrane epithelium show modification ,organ of corti Scala media triangular on sectionSlide 20: Sensory areas in membranous ssc and cochlea. 1/ Crista ampullaris of ssc 2/Macula in utricle and saccule. 3/organ of cortiSlide 21: Blood supply of internal Ear. internal auditory artery, branch of anterior cerbellar artery, cochlear and vestibular branches veins of same name drain to petrosal sinusSlide 22: Vestibular cochlear nerve.