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GIT 4 Salivary Glands - Coggle Diagram

- - - - table
- - - - Parasympathetic nerve supply
        
        To parotid glands
        
        It originates from the cells in
        inferior salivary nucleus
        i.e. dorsal nucleus of
        glossopharyngeal (IX) nerve.
        
        To Submandibular and
        sublingual glands
        
        It originates from the cells of
        superior salivary nucleus
        i.e. dorsal nucleus of
        facial (VII) nerve.
      - Sympathetic nerve supply
        
        It originates from the
        
        lateral horn cells of T1,2 segments
        of the spinal cord; axons
        
        via ventral roots
        
        enter paravertebral sympathetic chain
        
        to synapse with the cells
        
        in superior cervical ganglion
        
        to supply the salivary glands.
- - - - ptyalin
        
        lysozymes
        
        kallikrein,
        
        lipase,
        
        a lipolytic enzyme
        (secreted by glands on the tongue,
        therefore, also called lingual lipase).
        
        a proteolytic enzyme
        
        (bactericidal)
        
        or salivary α-amylase
      - Mucin,
        
        (glycoprotein)
        
        IgA
        
        first immunological defence against
        bacteria and viruses
        
        pH:
        
        slightly below 7.0 (under resting state);
        
        8.0 (during active secretion)
        
        Cations:
        
        Anions:
        
        Cl- 15-20 mEq/L (110 mEq/L)
        
        HCO3- 10-15 mEq/L (27 mEq/L)
        
        phosphate traces
        
        bromide traces
        
        Organic contents:
        
        1 more item...
        
        table
        
        Na+ 15-20 mEq/L (145 mEq/L)
        
        K+ 20-25 mEq/L (5 mEq/L)
        
        Ca2+ traces
- - - - thus assists mastication and facilitates swallowing
    - - by facilitating movements of lips and tongue.