An anatomical state in which the tonsils of the cerebellumThis word means the “little brain” and refers to a large part of the brain that sits in lowermost part of the skull,... protrude, to an abnormal degree, through the foramen magnumThe large, ovoid opening at the base of the skull, measuring about 3 x 3.5cm, through which the spinal cord passes, to c... at the base of the skull, into the spinal canalThe individual bones that comprise the spinal column are made up of a weight-bearing “body” and other components whi.... It is commonly referred to as a Chiari malformationAn anatomical abnormality affecting the lowermost part of brain, where it joins the spinal cord, at the top of the neck.....