Dissection of anterior and lateral regions of neck

Nerve supply to sternohyoid and sternothyroid muscles, anterior view

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Image #74-5
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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