S7 Dissection Summary

S7 Dissection Summary


Part 1 - Submandibular Area


Part 2 - Oral Cavity


Part 3 - Tongue

    • Turn the hemisected head so that a medial view of the tongue is possible
    • Identify the extrinsic and intrinsic tongue mm. and associated muscles
    • Remove the oral mucosa superior to the sublingual space
    • Remove the mental spine attachments of the geniohyoid m. and genioglossus m., and reflect the tongue posteromedially to open the sublingual space
    • Locate the remaining extrinsic tongue muscles:
    • Locate the following tongue structures from a superior view of the dorsum of the tongue:
        • medial lingual sulcus
        • filiform papillae
        • fungiform papillae
        • vallate papillae
        • sulcus terminalis
        • foramen caecum
        • lingual tonsil
    • On one side of the donor, remove the mucous membrane of the tongue to locate the intrinsic muscles
    • Identify the gross features of the oral cavity proper:
        • lingual frenulum
        • sublingual fold (& openings of the sublingual ducts)
        • sublingual caruncle
        • fimbriated folds


Part 4 - Neurovasculature

    • Reflect the tongue posteromedially to expose the floor of the mouth in the oral cavity proper
    • Clean and identify structures:
        • sublingual gland
        • deep portion of submandibular gland
        • submandibular (Wharton’s) duct
        • lingual a. (& brs)
        • lingual n. (& brs)
        • submandibular ganglion
        • hypoglossal n. (CN XII)
        • vena comitans of hypoglossal n.