Anatomy Physiology Inner Ear PDF

# Anatomy Physiology Inner Ear Prof. Dr. Mohamed Wael Mohamed Mustafa Professor of Audiovestibular Medicine South Valley University # Inner Ear = Labyrinth * Bony Labyrinth * **Ampulla** * **Oval window** * **Round window** * Membranous Labyrinth * **Endolymph** * **Semicircular canals**...

# Anatomy Physiology Inner Ear Prof. Dr. Mohamed Wael Mohamed Mustafa Professor of Audiovestibular Medicine South Valley University # Inner Ear = Labyrinth * Bony Labyrinth * **Ampulla** * **Oval window** * **Round window** * Membranous Labyrinth * **Endolymph** * **Semicircular canals** * **Utricle Saccule** * **Vestibule** * **Cochlea** * **Perilymph** * **Endolymphatic duct** # Cochlea - *Image depicts the cross-section of the cochlea* - **Cochlea** - **Oval window** - **Round window** - **Organ of Corti** - **Cochlear nerve fibres** - **Scala vestibuli** * **Reissner's membrane** - **Scala media** * **Tectorial membrane** * **Stria vascularis** * **Tunnel fibres** * **Tunnel outer hair cells** * **Deiters cells** * **Organ of corti** - **Scala tympani** * **Basilar membrane** # Vestibular Part of Labyrinth * **Semicircular canals** * **Utricle Saccule** * **Cochlea** * **Endolymphatic duct** # Briefly | Part of labyrinth | Sensory organ | Function | |---|---|---| | Cochlear duct | Organ of Corti | Hearing | | Saccule | Macula | Vertical Linear Acceleration | | Utricle | Macula | Horizontal Acceleration | | Semicircular ducts | Crista ampullaris | Rotational Acceleration | # Vertigo # Definition - Vertigo is a symptom, rather than a condition itself. It's the sensation that you, or the environment around you, is moving or spinning. This feeling may be barely noticeable, or it may be so severe that you find it difficult to keep your balance and do everyday tasks. - Nystagmus is the only sign. # Referral * To Audiovestibular Medicine Specialist * *Image depicts a man testing a woman's eye movement with a computer screen* * *Image depicts a woman wearing a VR headset for testing* # Causes of Vertigo * Benign Paroxysmal Positional Vertigo [BPPV]. * Endolymphatic hydrops “Meniere's Disease”. * Vestibular neuritis. * Labyrinthitis. * Perilymphatic fistula. * Vestibular Schwannoma (Acoustic Neuroma). # Investigations * Videonystagmography [VNG]. * Caloric test. * MRI. # Any Questions * Whatsapp: 01002318275 - 01100228222 * *Image depicts a chalkboard with "Any Questions?" written on it with a question mark drawn next to it with chalk. A man is in the corner of the image with his arms folded.* - *Image depicts a green WhatsApp icon*