human skull is the skeleton of his head.Share this skeleton on the front and part of the brain.
in the field of brain skeleton head shape is close to the ball.The structure of this part includes two parietal, frontal, occipital, temporal, and two other bones of the human skull.By type of all elements are sufficiently thick curved plates.These bones are called flat.Their task is protecting the brain from damage.
separate bony elements in the skeleton of the head are connected by joints.This joint is called fixed.Education is carried out jagged seam edges of two neighboring elements.In this case, cutting one of them includes the other tine.
human skull in the cerebral part has a relatively smooth surface (side and top).The base of the brain is covered by the roughness and different projections.This is because the skull of a person in the place connected with the muscle fibers.The base also has openings.Through them pass the nerves and blood vessels.Approximately at the center of this part of the skeleton of the head are a large hole (occipital), there is a connection through which the brain and spinal cord.
on the border sides and base of the skull located hearing hole (outer).The lower surface of the occipital bone element has articular processes, which lie on either side of the foramen magnum.With these processes human skull connected to a backbone.
front region of the skeleton of the head includes a pair of bony structure of the elements.These include maxillary, nasal, zygomatic, palatine, and other bones.Mandibular bone element is paired.
The facial skeleton head positioned mouth, nose and eye socket.
Hollow presents a deep depression.In it lies the eyeball, and his muscles, blood vessels and nerves.
nasal cavity opens in the front opening in the surface of the skeleton of the head.Behind the nasal cavity is connected to the throat by two holes.The right and left half of the cavity are formed by partitions dividing the bone.In each of the halves are formed by three bones nasal passages.
oral cavity is separated from the nasal palatine bone with the help of the elements and processes of the maxillary bone.The edges of the lower and upper jaws restrict mouth laterally.
human skull has the same parts and elements of the skeleton head mammals.However, an essential feature of the skeleton of the head people is very well developed part of the brain.In mammals, the more developed the front part.
elements that form the skull of a newborn person in a state of incomplete ossification.They are composed of connective tissue and cartilage.Occipital, frontal bone and other items contain several components.At the edges of the elements of the skeleton of the head of the newborn is not the teeth.Thus, the connection is made by means of a connective membrane strip rather than sutures.In areas where there is a convergence of multiple angles of bone elements, membrane widen, forming fontanelles.
With the development of the child takes some joint bones to each other, the formation of joints, overgrown fontanelles.Thus, gradually completing the process of ossification, bone growth begins.
skeleton head, as well, and the whole body, throughout all of human life is changing.Thus, with thirty years, as a rule, the process of overgrowth seams.Upon reaching old age person, teeth begin to fall and fade of the cell in which they are located.
