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The brow ridges are often not well expressed in human females, as pictured above in a female skull, and are most easily seen in profile. The brow ridge , or supraorbital ridge known as superciliary arch in medicine, is a bony ridge located above the eye sockets of all primates and some other animals.
The skull is quite robust in having a projecting brow ridge, weakly curved parietal bones, and a strongly flexed occipital at the back of the skull. These traits are well within the range of variation of modern humans.
Skull of the Abri Pataud woman Female face, carved ivory, Dolní Věstonice, Gravettian, c.26,000 BP. Cro-Magnons are physically similar to present-day humans, with a globular braincase, completely flat face, gracile brow ridge, and defined chin. However, the bones of Cro-Magnons are somewhat thicker and more robust. [54]
The supraorbital foramen is a small groove at superior and medial margin of the orbit in the frontal bone. It is part of the frontal bone of the skull. [2] It arches transversely below the superciliary arches and is the upper part of the brow ridge.
Less neotenized skull than of a majority of modern humans [7] Low, elongated skull with flat lambdoid region; Broad cranial vault with "en bombe" parietal morphology; A flat basicranium [15] [16] [17] Supraorbital ridge, a prominent, trabecular (spongy) brow ridge; 1,500–1,740 cm 3 (92–106 cu in) cranial capacity (modern human: 1425 cm 3)
SK 847 has a relatively short and narrow face, pronounced brow ridge, thick supraorbital torus, a sharp sloping frontal bone, delicate curved cheekbones, a rounded forward projecting nasal bones, an obvious supratoral sulcus, and a moderate constriction of the cranium behind the eye socket.
Frontal sinus. Each frontal sinus is situated between the external and internal plates of the frontal bone. [1] [2] Their average measurements are as follows: height 28 mm, breadth 24 mm, depth 20 mm, creating a space of 6-7 ml. [3]
The term also refers to the underlying bone that is slightly depressed, and joins the two brow ridges. It is a cephalometric landmark that is just superior to the nasion . [ 1 ]