Paralingual Space

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

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