Vestibular system. Dr. Altdorfer Károly. Semicircular canals and ducts. anterior posterior lateral. Membranous labyrinth. Receptors in the labyrinth. 2 maculae (sacculus, utriculus) 3 crests (in the 3 ampullae). - Secondary sensory epithelium - bipolar ggl. cells.
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Dr. Altdorfer Károly
2 maculae (sacculus, utriculus)
3 crests (in the 3 ampullae)
- Secondary sensory epithelium
- bipolar ggl. cells
vestibular ggl. (Scarpa)
Macula cribrosa superior
(N. utricularis, Nn. ampullares ant. et lat.)
Macula cribrosa media
Macula cribrosa inferior
(N. ampullaris post.)
area vestibularis sup.
area vestibularis inf.
Probable cause: endolymph amount increases enters perilymphatic spaces also all hair cells (Corti organ, maculae, cristae) functionally altered.
Affects hearing and balance to a varying degree. It is characterized by episodes of severe vertigo (dizziness) and tinnitus (ringing in the ear or machine like sounds) and progressive hearing loss.