A Lateral View of the Temporal Muscles of a Male

Description

Running fan shaped across the lateral skull, the temporalis muscle occupies the temporal fossa from the inferior temporal line down to its tendon as it passes deep to the zygomatic arch. Anteriorly it approaches the lateral orbital margin and zygomatic process of the frontal bone, while posterior fibers sweep toward the squamous part of the temporal bone and parietal region. Inferiorly, the muscle converges to a thick tendon that inserts on the coronoid process and anterior border of the mandibular ramus, lying superior to the masseter and lateral to the buccal space. Key bony landmarks frame the field. The temporal fascia caps the muscle superficially. This lateral perspective matters when teaching how fiber direction predicts function, with anterior temporalis contributing to mandibular elevation and posterior fibers assisting in retrusion during the closing phase of mastication. Clinically, the region is a common generator of head and jaw pain in temporomandibular disorder and bruxism, and temporalis hypertrophy can be appreciated on inspection and palpation above the zygomatic arch. Surgeons also track these relationships during a hemicoronal approach or pterional craniotomy, where protecting the frontal branch of the facial nerve and preserving temporalis bulk helps reduce postoperative chewing weakness and temporal hollowing. Use this asset for head and neck anatomy blocks, dental and maxillofacial surgery teaching, or as a clear plate in atlases covering the muscles of mastication and their bony attachments. It also fits patient education on TMJ-related myofascial pain and procedural consent diagrams for temporal craniotomy exposure. Anatomical accuracy verified by SciePro's Medical Advisory Board.