Parietal Bone Showing The Superior Temporal Line, Superior View

Description

Parietal bone anatomy is centered in this superior view, with the superior temporal line (linea temporalis superior) sweeping in an anterolateral-to-posterolateral arc across the external surface. Medially, the sagittal border approaches the midline where it would meet its contralateral partner at the sagittal suture, while anterior and posterior margins correspond to the coronal and lambdoid regions of the calvaria. Lateral to the temporal line, the parietal surface descends toward the squamous border and the temporal fossa; medial to it, the parietal eminence and the gently convex parietal tuberosity region are suggested by the bone’s curvature. A clean bony landmark. The superior temporal line matters because it marks the superior limit of temporal fossa attachments and gives attachment to the temporal fascia, a relationship that helps orient the footprint of the temporalis muscle relative to the calvarial vault during dissection and lateral cranial approaches. In neurosurgical planning for temporal or frontotemporal craniotomy, correlating this line with the thickness and curvature of the parietal squama helps anticipate where soft tissue elevation transitions from the scalp and galea to temporalis fascia and muscle, and it clarifies why incisions placed too low invite muscle bleeding and postoperative mastication pain. Emphasis on the line’s posterior sweep also supports teaching of surface anatomy where the temporal lines remain palpable even when sutures are not. Use this illustration in gross anatomy and osteology teaching to identify parietal bone landmarks, to differentiate the temporal lines from sutural ridges, and to orient students to the temporal fossa from a superior cranial perspective. It also fits operative anatomy atlases, exam items on calvarial borders and sutures, and preoperative patient education material discussing craniotomy incision placement. Anatomical accuracy verified by SciePro's Medical Advisory Board.