(Cranium) Knorplige oder knöcherne, v.a. das Gehirn, auch die Augen, Ohren und Nase schützende Kapsel der Säugetierköpfe; unterschieden nach Hirn-und Gesichtsschädel (Facies).
ETYM New Lat., from Greek; akin to kara head.
The part of the skull that encloses the brain; SYN. braincase, brainpan.
Skull, especially part enclosing brain.
The dome-shaped area of the vertebrate skull that protects the brain. It consists of eight bony plates fused together by sutures (immovable joints). Fossil remains of the human cranium have aided the development of theories concerning human evolution.
The cranium has been studied as a possible indicator of intelligence or even of personality. The Victorian argument that a large cranium implies a large brain, which in turn implies a more profound intelligence, has been rejected.
In vertebrates, the collection of flat and irregularly shaped bones (or cartilage) that enclose the brain and the organs of sight, hearing, and smell, and provide support for the jaws. In mammals, the skull consists of 22 bones joined by sutures. The floor of the skull is pierced by a large hole (foramen magnum) for the spinal cord and a number of smaller apertures through which other nerves and blood vessels pass.
The skull comprises the cranium (brain case) and the bones of the face, which include the upper jaw, enclosing the sinuses, and form the framework for the nose, eyes, and roof of the mouth cavity. The lower jaw is hinged to the middle of the skull at its lower edge. The opening to the middle ear is located near the jaw hinge. The plate at the back of the head is jointed at its lower edge with the upper section of the spine. Inside, the skull has various shallow cavities into which fit different parts of the brain.
The human skull has evolved from robust to gracile in the past 5. 5 million years; it exhibits neoteny (infantilism), whereby the youthful features of ancient human species are retained in the adult skulls of modern humans— probably to make room for the evolving and enlarging brain.
(Homonym: scull).
The bony skeleton of the head of vertebrates.
Cranium, das zunächst knorpelige (Knorpel-S. bei Knorpelfischen), dann knöcherne Skelett des Kopfs der Wirbeltiere.
Der S. des Menschen besteht aus Gehirn- u. Gesichts-S. Im unteren Teil des Gehirn-S., der S.basis, die aus Keilbein, Schläfenbeinen u. Hinterhauptsbein gebildet wird, befinden sich Öffnungen zum Austritt der Gehirnnerven. Der obere Abschluß, die S.decke (Kalotte), überwölbt die S.höhle, die das Gehirn enthält. Die S.knochen sind durch Knochennähte verbunden.