Paralingual Space – Flashcards
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carotid triangle of the anterior neck
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bounded posteriorly by the the anterior border of the SCM, anteriorly by the superior belly of the omohyoid and superiorly by the posterior belly of the digastric
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What is contained in the carotid triangle?
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Carotid sheath, various nerves (CN X, XI, and XII), smaller arteries from external carotid artery and smaller veins that drain into the internal jugular
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Anterior belly of digastric function and innervation
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digastrics serve to elevate hyoid bond and depress mandible, efferently innervated by the mandibular division of the trigeminal (V3) by mylohyoid nerve
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Stylohyoid muscle function and innervation
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elevates and retracts hyoid bon, splits around digastric before attaching to hyoid, efferently innervated by motor fibers of the facial nerve
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Digastric innervation
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dual innervation: anterior belly by V3 and posterior belly by VII
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Submandibular triangle boundaries
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Anterior and posterior belly of the digastric muscle and lower border of the mandible
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Structures found in the submandibular triangle
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Submandibular gland, facial artery and vein, mylohyoid nerve
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Mylohyoid nerve
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efferently innervates mylohyoid muscles of the floor of the mouth, arises from inferior alveolar nerve (branch of V3)
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submandibular glands location
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located below the mylohyoid muscle in submandibular triangle
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Submandibular gland innervation
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innervated by parasympathetic fibers passing through submandibular ganglion in the paralingual space (originating from facial nerve and traveled via the chord tympani nerve)
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What type of glands are submandibular and sublingual glands?
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mixed glands--serous and mucinous product (parotid is entirely serous)
