Bassett Collection Large Image - Lane Medical Library, Stanford University Medical Center

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Dissection of anterior and lateral regions of neck

Nerve supply to sternohyoid and sternothyroid muscles, anterior view

1 .	Sternohyoid muscle (cut across near insertion)
2 .	Anterior jugular vein
3 .	Thyroid cartilage (covered by membrane)
4 .	Upper pointer: Levator muscle of thyroid gland Lower pointer: Fibrous-remnant of thyroglossal duct
5 .	Sternohyoid muscle
6 .	Sternocleidomastoid muscle
7 .	Prelaryngeal lymph nodes
8 .	Branch of superficial cutaneous nerve (displaced inward at termination)
9 .	Isthmus of thyroid gland
10 .	Middle layer of superficial fascia
11 .	Anterior jugular veins (connected by jugular venous arch)
12 .	Superior thyroid artery
13 .	Thyrohyoid muscle
14 .	Internal jugular vein
15 .	Cricothyroid branch superior thyroid artery
16 .	Position of oblique line thyroid cartilage
17 .	Ansa hypoglossi
18 .	Pyramidal lobe of thyroid gland
19 .	Sternothyroid muscle
20 .	Aberrant muscle fascicle attaching to carotid sheath
21 .	Nerves to sternothyroid muscle
22 .	Site of entry into internal jugular vein of jugular, subclavius and anterior mediastinal trunks
23 .	Upper pointer: Nerves entering sternohyoid muscle Lower pointer: Sternohyoid muscle (divided and reflected anteriorly)
24 .	Sternoclavicular ligament and clavicle