Identify the internal surface features and structures associated with the oral cavity.

  1. Identify the tongue, terminal sulcus, foramen cecum, vallate papillae, and sublingual fold and caruncle. (G 8.24 & 8.27;N 58 & 61;Gl 38.20)
  2. Identify the sublingual gland, submandibular duct and lingual nerve in the floor of the oral cavity. (G 8.19B;N 53;Gl 38.27C)
    Important Relationship
    • The sublingual artery is positioned inferior to the submandibular duct.
    • The sublingual gland is positioned superior to the mylohyoid muscle and lateral to the genioglossus muscle.
    • The lingual nerve passes medial to the mandible and lateral to the medial pterygoid and styloglossus muscles.
    • The lingual nerve passes inferior to the superior constrictor and pterygomandibular raphe.
    • The lingual nerve passes lateral, inferior and medial to the submandibular duct.
Oral Pharynx
Sublingual Gland
Submandibular Duct
Lingual Nerve