Muscles of the Tongue, Superior View

Description

Seen from a superior orientation over the oral cavity, the dorsum of the tongue is opened to reveal the intrinsic muscle strata, with longitudinal fibers running anteroposteriorly and transverse and vertical components intersecting them to define the midline septum and lateral margins. Along the posterolateral tongue, extrinsic bundles consistent with hyoglossus and styloglossus course from inferior and posterior attachment sites toward the body of the tongue, while genioglossus fans anteriorly from the genial tubercles to occupy the central bulk. Superiorly, the hard palate and maxillary alveolar arch frame the field, and the floor of mouth musculature, including mylohyoid, supports the tongue from an inferior plane. A superior dissection-style view like this clarifies what learners often miss on sagittal diagrams: the tongue is not a single muscle but an interwoven organ whose intrinsic fibers reshape the tongue surface while the extrinsic muscles reposition the entire mass relative to the mandible and hyoid. That distinction maps directly to clinical localization in hypoglossal nerve palsy, where unilateral weakness produces ipsilateral tongue deviation on protrusion and impaired bolus control, and to operative planning for partial glossectomy where fiber direction influences defect closure and postoperative speech and swallow outcomes. Small asymmetries matter. So does the midline. Use this plate for head and neck anatomy teaching, speech-language pathology modules on articulation biomechanics, and surgical atlases addressing oral cavity cancer margins, floor-of-mouth exposure, or reconstruction concepts that depend on intrinsic versus extrinsic muscle planes. Anatomical accuracy verified by SciePro's Medical Advisory Board.