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Dissection of anterior and lateral regions of neck

Thyrohyoid muscle, anterior view

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Image #74-3
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Dissection of anterior and lateral regions of neck
Thyrohyoid muscle, anterior view
The sternohyoid and omohyoid muscles (5) have been detached from the hyoid bone and turned inferiorly. The thin fascia of the thyrohyoid muscle (9) has been removed.
1 . Body of mandible
2 . Anterior belly digastric muscle
3 . Mylohyoid muscle
4 . Body hyoid bone (covered by fibrous tissue)
5 . Upper pointer: Omohyoid muscle (cut-off) Lower pointer: Sternohyoid muscle (cut-off)
6 . Anterior jugular vein
7 . Thyroid cartilage (covered by fascia)
8 . Fibrous remnant of thyroglossal duct (note accompanying Ievator glandulae thyroideae muscle)
9 . Upper pointer: Thyrohyoid muscle left Lower pointer: Cricothyroid branch superior thyroid artery
10 . Sternohyoid muscle right
11 . Sternocleidomastoid muscle right
12 . Prelaryngeal lymph nodes and medial superior thyroid lymphatic vessels
13 . Sternohyoid muscle (reflected inferiorly)
14 . Veins of submandibular gland
15 . Bifurcation of common carotid artery (covered by carotid sheath)
16 . Internal jugular vein
17 . Superior thyroid artery
18 . Descending branch hypoglossal nerve
19 . Cervical nerve IV
20 . Left pointer: Hyoid branch lingual artery Right pointer: Thyrohyoid branch hypoglossal nerve
21 . Branch of descending branch hypoglossal nerve to sternohyoid muscle and superior belly omohyoid muscle
22 . Sternocleidomastoid branch superior thyroid artery
23 . Anterior branch of superior thyroid artery
24 . Ansa hypoglossi
25 . Superior belly omohyoid muscle (reflected inferiorly)
26 . Sternothyroid muscle