Sense organs by hcj

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									       Sense organs.
     The Audiovestibular
           organ
•   Taste buds
•   Audiovestibular nalizator
•   Audiovestibular organ
•   External ear
•   Middle ear
•   Internal ear:
      a) bony labyrinth;
      b) membranous labyrinth
7. Hair cells
8. Hearing histophysiology
           ANALIZATOR
        sense organ + nerve +
            cortex (field)

                      Sense organs


                                     Sensory
                  Secondary          endings
Primary sensory   sensory            (receptors)

•   Eye                              •   Receptor of p
•   Smell organ   •    Ear
                  •    Taste buds    •   Paccinian bo
                                     •   Bulb of Krau
Taste buds
 AUDIOVESTIBULAR
   ORGAN (EAR)
• External ear
• Middle ear
• Internal ear
     INTERNAL EAR
   vestibule+3 semicircular canals
              +cochlea


Bony labyrinth
Membranous labyrinth
Maculae
Crista ampullaris
    Cochlea axial section

•
MEMBRANOUS
 LABYRINTH
     Membranous
  labyrinth (scheme)
• Vestibular membrane
• Basilar membrane
• Stria vascularis
           Corti’s organ




       Stria vascularis       Outer hair cells

                                                   Tectorial
                                                  membrane
       Hensen cells



                                          Inner hair cells




 Basilar   Outer phalangeal
mebrane          cells           Pillar cells
            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)
     Apical portion
of outer phalangeal and
       hair cells
Phalangeal and hair
  cells (scheme)
           Hearing
       histophysiology


                                    Scala vestibuli

                Oval window

                                                      VM




Round window
                                                      BsM
         Cochlear nerve

                          Spiral ganglion

								
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