1. Sense organs. The Audiovestibular organ 1.Taste buds 2.Audiovestibular nalizator 3.Audiovestibular organ 4.External ear 5.Middle ear 6.Internal ear: a) bony labyrinth; b) membranous labyrinth 7. Hair cells 8. Hearing histophysiology

2. ANALIZATOR sense organ + nerve + cortex (field) Sense organs Primary sensory 1.Eye 2.Smell organ Secondary sensory 1.Ear 2.Taste buds Sensory endings (receptors) 1.Receptor of pain 2.Paccinian body 3.Bulb of Krause

3. Taste buds

4. AUDIOVESTIBULAR ORGAN (EAR) External ear Middle ear Internal ear

5. INTERNAL EAR vestibule+3 semicircular canals +cochlea Bony labyrinth Membranous labyrinth

6. Maculae

7. Crista ampullaris

8. Cochlea axial section

9. MEMBRANOUS LABYRINTH

10. Membranous labyrinth (scheme) Vestibular membrane Basilar membrane Stria vascularis

11. Corti’s organ Outer hair cells Basilar mebrane Tectorial membrane Inner hair cells Hensen cells Stria vascularis Outer phalangeal cells Pillar cells

12. Corti’s organ Outer cells: A. Supporting 1. Phalangeal (Deyters) 2. Border (Hensen) 3. Outer supporting (Claudius) B. Hair cells (3-5) Tunnel ( pillar cells) Inner cells A. Supporting 1. Phalangeal 2. Inner supporting B. Hair cells (1-2)

13. Apical portion of outer phalangeal and hair cells

14. Phalangeal and hair cells (scheme)

15. Hearing histophysiology Scala vestibuli VM Oval window Round window BsM Cochlear nerve Spiral ganglion