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23 Cards in this Set
- Front
- Back
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three salivary glands start to develop when
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weeks 6 - 7
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connective tissue of the glands is derived from:
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neural crest cells
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the secretary portion of the gland comes from:
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the oral epithelium
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which glands are the first to appear
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parotid glands
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a solid cord of cells develops where and moves where:
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from the area between the maxillay and mandibular prominences and proceeds towards the ear but maintains connnections with the angle of the mouth
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the solid cord develops a lumen and becomes:
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the duct of the gland
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the ends of the cord become:
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the secretory portions of the gland
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gland is fully funcional by
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18th week
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which nerve courses through the gland and divides it into a superfician and deep part
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CN VII
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the parotid gland contains mostly:
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serous acini
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parotid capsule characteristics:
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-investing layer of the deep cervical fascia goes on both sides of the gland
-strong fascia that encloses the entire gland -continuous with the deep fascia of the neck |
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parotid duct:
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-2 in long, 1/4 in in diameter
-leaves the anterior edge of the gland and pierces the buccinator m to enter the oral cavity opposite the 2nd maxillary molar |
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structures within the parotid gland
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-Facial nerve CN VII
-Retromandibular vein -External carotid artery ---macillary artery ---superficial temporal artery |
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facial nerve gives off 2 branches before entering the gland:
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-posterior auricular branch
-motor nerve to the posterior belly of the digastric and stylohyoid m |
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retromandibular v is formed in the parotid gland by the junction of:
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superficial temporal v
maxillary v |
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terminal branches of the external carotid and their destination:
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-maxillary artery - proceeds anteriorly to enter the infratemporal fossa
-superficial temporal artery - proceeds superiorly to supply the scalp |
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the posterior part of the retromandibular v joins with the:
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posterior auricular v to form the external jugular vein
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the anterior part of the retromandibular v joins wih the:
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facial v to drain into the internal jugular v
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the external carotid artery terminates in the parotid gland by giving off two branches destined for:
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-maxillary artery - proceeds anteriorly to enter the infratemporal fossa
-superficial temporal - proceeds superiorly to the scalp |
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sympathetic nerves to the parotid gland
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-postganglionic sympathetic fibers are derived from the superior cervical ganglion and travel to the parotid gland with the external carotid a
-produces thick saliva |
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parasympathetic nerves to the parotid gland
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-branches of CN IX (tympanic n and lesser petrosal n) bring preganglionic fibers to the otic ganglion
-postganglionic fibers go from otic ganglion to parotid gland with auriculotemporal n (branch of mandibular division of V) -produce thin watery saliva |
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-acute, communicable viral infection of salivary glands
-pain b/c of sheath surrounding gland |
mumps
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tumors of parotid
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-80% of salivary gland tumors occur in the parotid
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