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

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Dissection of anterior and lateral regions of neck

Larynx; nerve supply to cricothyroid muscle, left anterolateral view

The left inferior constrictor muscle of the pharynx has been reflected from its origin.

1 .	Sublingual gland (mandible removed)
2 .	Mylohyoid muscle
3 .	Anterior belly digastric muscle (turned inferiorly to expose nerve supply)
4 .	Left cartilaginous plate of thyroid
5 .	Oblique line of thyroid cartilage (covered by tendinous band for attachment of muscles)
6 .	Prelaryngeal lymph node
7 .	Upper pointer: Straight part of cricothyroid muscle Lower pointer: Oblique part of cricothyroid muscle
8 .	Clavicle right
9 .	Mylohyoid nerve
10 .	Internal carotid artery
11 .	Upper pointer: Superior laryngeal artery Lower pointer: External carotid artery
12 .	Hypoglossal nerve (XII)
13 .	Upper pointer: Internal branch superior laryngeal nerve Lower pointer: Superior horn thyroid cartilage
14 .	Sympathetic trunk
15 .	Longus capitis muscle
16 .	Thyrohyoid membrane
17 .	Superior thyroid artery
18 .	External branch of superior laryngeal nerve
19 .	Inferior pharyngeal constrictor muscle (reflected)
20 .	Common carotid artery
21 .	Vagus nerve (X)
22 .	Inferior horn thyroid cartilage
23 .	Anterior scalene muscle
24 .	Upper pointer: Inferior laryngeal nerve Lower pointer: Trachea