frontozygomatic

—The line of the anterior division of the middle meningeal artery is equidistant from the frontozygomatic suture and the zygomatic arch; it is obtained by joining up the following points: (1) 2.5 cm., (2) 4 cm., and (3) 5 cm. from these two landmarks.

XII. Surface Anatomy and Surface Markings. 2. Surface Markings of Special Regions of the Head and Neck 1918

Another method of defining the Sylvian point is to divide the distance between the nasion and inion into four equal parts; from the junction of the third and fourth parts (reckoning from the front) draw a line to the frontozygomatic suture; from the junction of the first and second parts a line to the auricular point.

XII. Surface Anatomy and Surface Markings. 2. Surface Markings of Special Regions of the Head and Neck 1918

—The point where the great wing of the sphenoid joins the sphenoidal angle of the parietal; it is situated 35 mm. behind, and 12 mm. above, the level of the frontozygomatic suture.

XII. Surface Anatomy and Surface Markings. 2. Surface Markings of Special Regions of the Head and Neck 1918

In order to mark out the lateral cerebral (Sylvian) fissure a point, termed the Sylvian point, which practically corresponds to the pterion, is defined 35 mm. behind and 12 mm. above the level of the frontozygomatic suture; this point marks the spot where the lateral fissure divides.

XII. Surface Anatomy and Surface Markings. 2. Surface Markings of Special Regions of the Head and Neck 1918