salivary glands

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  • Created by: gibs
  • Created on: 27-05-15 11:29

SALIVARY GLANDS

PAROTID GLANDS- located between the ramus of the mandible and the ear 

SUBMANDIBULAR SALIVARY GLANDS- floor of the mouth (posteriour)  

SUBLINGUAL SALIVARY GLANDS - floor of the mouth (anterior) 

(http://entallergyandsinus.com/wp-content/uploads/2010/12/salivary_glands.jpg)

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PAROTID GLAND

- The largest of the three mmajor salivary glands  and is this only one that is affected by the viral infection mumps 

- Stenson duct- connects the gland to the oral cavity

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SUBMANDIBULAR GLAND

- Posterior region of the floor of the mouth 

submandibular duct (warton duct)

Longest of the salivary ducts  and most likely to be blocked by salivary stones (calculi) 

Innervated by the facial nerve 

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SUBLINGUAL GLAND

- LIES IN THE FLOOR OF THE MOUTH FURTHER FORWARD THAN THE SUBMANDIBULAR 

INNERVATED BY THE FACIAL NERVE 

MINERALS NEUTRALISE DIETARY ACIDS 

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MUSCLES OF MASTICATION

TEMPORALIS- temprol bone of the cranium/ pulls the mandible backwards and closed 

MASSETER- zygomatic arch/ closes the mandible 

LATERAL PTERYGOID- lateral pterygoid plate/ both muscle contracting brings the mandible forwards bite anterior teeth tip to tip. One muscle contracting  pulls the mandible  to the opposite side 

MEDIAL PTERYGOID- medial pterygod plate/ closes the mandible

 (http://droualb.faculty.mjc.edu/Lecture%20Notes/Unit%203/Muscles_of_mastication_4.jpg)

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nerve supply to the teeth

Mandibular nerve 

Inferior dental nerve- supplies sensation fom all of the lower teeth and from the buccal or labial gingivae of all except the molar teeth , in addition it supplies sensation from the soft tissue of the lower lip and chin

Lingual nerve- Supplies sensation from the lingual ginigivae of all of the lower teeth, the floor of the mouth, and touch sensation from the anterior two thirds of the tongue 

Long Buccal Nerve- Supplies sensation from the buccal gingivae of the lower molar teeth 

Motor Branch- Supplies stimulation to the muscels of mastercation to effect the jaw closing and chewing movements

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