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The occipital bun pointed out on a Neanderthal skull. The occipital bun is a protuberance of the occipital bone. Its size and shape has been compared to that of a dinner roll. It is a quintessential trait of Neanderthals, though it is a trend in archaic Homo species. The true purpose of the occipital bun has not yet been defined. [3]
Pachycephalosaurus is the largest-known pachycephalosaur, known for having an extremely thick, slightly domed skull roof; visually, the structure of the skull suggests a ‘battering ram' function in life, evolved for use as a defensive mechanism or intra-species combat, similar to what is seen with today's bighorn sheep or muskoxen (with male ...
The occipital bone is part of the endocranium, the most basal portion of the skull. In Chondrichthyes and Agnatha, the occipital does not form as a separate element, but remains part of the chondrocranium throughout life. In most higher vertebrates, the foramen magnum is surrounded by a ring of four bones.
An osteoma (plural osteomas or less commonly osteomata) is a new piece of bone usually growing as a benign tumour on another piece of bone, typically the skull. When grown on other bone it is known as "homoplastic osteoma"; on other tissue it is called "heteroplastic osteoma". [1]
Pott's puffy tumor, first described by Sir Percivall Pott in 1760, is a rare clinical entity characterized by subperiosteal abscess associated with osteomyelitis.It is characterized by an osteomyelitis of the frontal bone, either direct or through haematogenic spread.
Ossicones are formed at late gestation, but in early development they are not bony and not fused to the skull yet. Ossicones usually fuse to the skull at sexual maturity. [1] [2] All male and female giraffes have a pair of parietal ossicones on the parietal bones of the skull. [3]
Scalp folliculitis is a skin condition that occurs when the hair follicles on the scalp become inflamed. This results in pustules, whiteheads, or other pimple-like bumps on the scalp that can be ...
The brow ridge is a nodule or crest of bone situated on the frontal bone of the skull. It forms the separation between the forehead portion itself (the squama frontalis) and the roof of the eye sockets (the pars orbitalis). Normally, in humans, the ridges arch over each eye, offering mechanical protection.