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Tongue
Aka: Tongue- Physiology
- Development
- Anterior 2/3 from 1st branchial arch (CN VII)
- Posterior 1/3 from 2nd-3rd branchial arch (CN IX)
- Anatomy
- Filiform papillae (cover most of dorsal Tongue)
- Fungiform papillae (scattered over dorsal surface)
- Circumvallate papillae (near terminal sulcus)
- Salivary Glands (present throughout Tongue)
- Development
- Exam
- Stick out Tongue, turn to both sides (CN XII)
- Tongue dorsum should be pink, velvety
- Use gauze to grasp anterior Tongue to see all surfaces
- Palpate for Tongue masses or Nodules (especially Tongue base and lateral margins)
- Observe for white lesions suggestive of Leukoplakia
- Exam: Normal Findings
- Dorsal fissuring (Scrotal Tongue)
- Indented Lateral Margins of Tongue
- Geographic Tongue (Benign Migratory Glossitis)
- Median Rhomboid Glossitis
- Varicose Veins of Tongue ("Caviar Lesions")
- Exam: Tongue Abnormalities
- Exam: Presenting Tongue Symptoms
- Exam: Cancers and Pre-cancers