Dissection of oral region
Genoglossus muscle; lingual artery; glossopharyngeal nerve, left lateral view
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Image #70-2
Dissection of oral region
Genoglossus muscle; lingual artery; glossopharyngeal nerve, left lateral view
The lingual and hypoglossal nerves have been partially removed and the hyoglossus muscle cut through to expose the lingual artery (22) and its major branches. Periosteum has been stripped from the hyoid bone and the left lamina of the thyroid cartilage has been resected. The styloglossus muscle has been divided to expose the stylopharyngeus muscle.
- Nasal mucosal membrane (periosteal surface)
- Medial incisor
- Fimbriated fold (of tongue)
- Cut ends of lingual nerve
- Genioglossus muscle
- Hyoglossus muscle (partially resected) and deep lingual artery
- Sublingual artery (cut off)
- Branches of hypoglossal nerve (cut off)
- Geniohyoid muscle (fibers separated)
- Position of epiglottal cartilage (beneath membrane)
- Lamina right thyroid cartilage
- Palatine nerves anterior and medial
- Levator veli palatini muscle
- Tensor veli palatini muscle
- Lymphatic vessel draining soft palate
- Superior pharyngeal constrictor muscle
- Ascending palatine artery
- Stylopharyngeus muscle
- Styloglossus muscle (cut across, fibers separated to expose branch of hypoglossal nerve entering inferior part of muscle)
- Glossopharyngeal nerve (IX)
- Hypoglossal nerve (XII) (cut off)
- Upper pointer: Lingual artery Lower pointer: Hyoid branch of lingual artery (cut off)
- External carotid artery (pointer opposite origin of superior laryngeal artery)
- Upper pointers: Branches of dorsal tongue lingual artery Lower pointer: Lesser horn hyoid bone
- Greater horn hyoid bone
- Upper pointer: Superior laryngeal artery Lower pointer: Superior laryngeal nerve
- Piriform recess (outer surface of mucosa)
- Medial laryngeal gland