Dissection of oral region

Nerve supply to geniohyoid and hyoglossus muscles, left lateral view

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Image #70-1
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Dissection of oral region
Nerve supply to geniohyoid and hyoglossus muscles, left lateral view
The lingual and hypoglossal nerves have been elevated.
1 . Mucosa of hard palate
2 . Transverse palatine fold
3 . Tongue
4 . Medial incisor
5 . Genioglossus muscle
6 . Sublingual artery
7 . Geniohyoid muscle (fascicles separated to expose nerves)
8 . Hyoid bone
9 . Thyroid cartilage
10 . Anterior palatine nerve
11 . Lingual nerve
12 . Buccopharyngeal fascia
13 . Styloglossus muscle
14 . Ascending palatine artery
15 . Upper pointer: Posterior facial vein Lower pointer: External maxillary artery
16 . Upper pointer: External carotid artery Lower pointer: Lingual artery
17 . Upper pointer: Hyoglossus muscle Lower pointer: Muscular branches of hypoglossal nerve
18 . Hypoglossal nerve (XII)
19 . Superior laryngeal nerve
20 . Superior thyroid artery
21 . Upper pointer: Cut end of stylohyoid muscle Lower pointer: Piriform recess (outer surface of mucosa)