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Taste and Salivary Gland - Coggle Diagram

- - - - Ageusia: Total loss of taste
      - Dysgeusia: Change in taste
  - - - Most numerous: Not involved in taste (increase friction)
- - - - Lingual Nerve + Chorda Tympani (VII nerve) -> Through Middle Ear -> Geniculate Gnaglion -> Nervus Intermedius -> Exit via Internal auditory Canal -> Solitary Nucleus
    - - Branch of IX nerve -> IX Nerve -> Inferior Glossopharyngeal Ganglion -> Solitary Nucleus
    - - Superior laryngeal nerve -> X Nerve -> Solitary Nucleus
  - - - V3 (Lingual nerve) to Trigeminal Nucleus
    - - Pharyngeal Branches of IX -> Superior or inferior Glossopharyngeal ganglion
- - - - Characteristics
        
        Stensors Duct opens at 2nd upper molar
        Serous Cells
        Facial nerve runs through it
      - Histology
        
        Serous Cells - Thinner Secretions
      - Nerve Supply
        
        Parasympathetic
        
        Inferior Salivatory Nucleus
        Glossopharyngeal Nucleus (via lesser petrosal nerve)
        Otic Ganglion
        Auriculotemporal nerve
        Parotid Gland
    - - Characteristics
        
        Wharton's Ducts under tongue
        Mixed but predominance of serous cells
        Close to lingual and hypoglossal nerve
      - Histology
        
        Mixed Serous and Mucinus Cells - Thicker
    - - Characteristics
        
        Ducts of Rivinus
        Mixed but predominance of mucous cells
      - Histology
        
        Mucinus - Thickest
      - Nerve Supply
        
        Superior salivatory nucleus (pons)
        facial nerve (nervous intermedius) > chorda tympani > lingual nerve
    - - Thoracic Spinal cord, superior cervical ganglion, post-ganglionic plexus along carotid branches
      - Secretion
        
        Total: 1-1.5L
        
        Parasympathetic
        
        Post-ganglionic fibers release Ach
        Stimulation produces acinar fluid (anticholinergics are anti-sialongues)
        
        Sympathetic
        
        Norepinepherine
        Stimulation of gland produces scant viscous saliva rich in organic and inoranic solutes
    - - Function
        
        Lubrication
        Mastication and swallowing
        Articulation
        For taste
        oral hygiene
        Immune protection (IgA)
- - - - Malignant: Facial nerve palsy, lymphadenopathy, skin involvment
    - - Note: Facial nerve is in the middle of gland