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Related to foramen magnum: jugular foramen
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The dimensions of the adult foramen magnum have been quantified in numerous studies (Burdan et al.
However, when you look at the full range of diversity across mammals, the evidence is compelling that bipedalism and a forward-shifted foramen magnum go hand-in-hand.
Anatomical variations of the foramen magnum, occipital condyle and jugular tubercle.
In humans the foramen magnum is situated beneath the skull, as the head is ballanced atop an erect bipedal body.
Chris Kirk, associate professor of anthropology and co-author of the study, says the findings validate foramen magnum position as a diagnostic tool for fossil research and sheds further insight into human evolution.
the aqueductal level or the level of the foramen magnum.
Other practices which were part of the ritual of headhunting described by Hose could be observed, like widening of foramen magnum, burning of skulls, mandible tied to the cranium with a strip of rattan or cotton, as well as drilled perforations to suspend skulls in longhouses.
Normally the cerebellum and parts of the brain stem sit in an indented space at the lower rear of the skull, above the foramen magnum (a funnel-like opening to the spinal canal).
Part of the brain, called the cerebellum, is forced out through the foramen magnum, a hole at the base of the skull.
Cervical X-rays showed basilar invagination consistent with the superior part of the odontoid proces being displaced into the foramen magnum.
Occipital dysplasia has been characterized by a dorsal midline notch of the foramen magnum into the occipital bone, which can vary in shape and size (PARKER & PARK, 1974a; DE LAHUNTA, 1983; ETTINGER, 1995; BAGLEY et al.