Dissection of left submaxillary (submandibular) gland and related structures

Relation of submaxillary gland to structures in carotid triangle, inferolateral view

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Image #68-2

Dissection of left submaxillary (submandibular) gland and related structures Relation of submaxillary gland to structures in carotid triangle, inferolateral view The fascia has been partially removed from the structures inferior to the submaxillary gland and medial to the internal jugular vein. The fascia over the infrahyoid muscles has been cut away. 1 . Upper pointer: Body of mandible Lower pointer: Submandibular gland 2 . Anterior belly digastric muscle 3 . Dense fibrous tissue covering body hyoid bone 4 . Thyrohyoid brach of hypoglossal nerve (constituent fibers derived from cervical nerves I - II) 5 . Superior thyroid artery 6 . Thyrohyoid muscle 7 . Omohyoid muscle (superior belly) 8 . Sternohyoid muscle 9 . Superior deep cervical lymph nodes 10 . Nerve to omohyoid muscle 11 . External jugular vein (cut off) 12 . External maxillary artery and submandibular lymph node 13 . Deep cervical lymph node 14 . Cervical nerve III 15 . Descending branch hypoglossal nerve (fibers derived from cervical nerves I - II) 16 . Position of common carotid artery (covered by carotid sheath) 17 . Prevertebral fascia 18 . Internal jugular vein (carotid sheath partially removed) 19 . Descending cervical nerve (fibers from cervical nerve II-III which join descending branch hypoglossal nerve to form ansa hypoglossi) 20 . Descending branch hypoglossal nerve 21 . Anterior supraclavicular nerves (cut off) 22 . Sternocleidomastoid branch of superior thyroid artery 23 . Ansa hypoglossi