Introduction of cranial cavity:

It is a cavity composed of eight skulls, such as frontal bone, occipital bone, sphenoid bone, ethmoid bone, two temporal bones and two parietal bones, and the skin and muscles of the head. There is brain tissue in it, which is the center for regulating and directing various physiological activities. Cranial cavity has the function of protecting brain tissue.

However, because the skull is loose and thin, the protective ability of the outer fat layer and muscles is weak and relatively fragile. If it is impacted by external force, it may lead to skull fracture, which will not only cause patients with pain symptoms, edema or cerebral hemorrhage, but also oppress the brain parenchyma.

At this time, it will affect the normal function of brain cells and nerves, so we need to pay attention to protecting the skull in our daily life and try not to let the skull be directly impacted by external forces. If the brain is impacted by external force, you need to go to the hospital as soon as possible to cooperate with the doctor to do CT or MRI examination of the skull and observe the cranial cavity. At this time, stay in bed and avoid strenuous activities.

Cranial cavity refers to the cavity surrounded by the skin and muscles of the head and eight skulls (frontal bone 1, parietal bone 2, sphenoid bone 1, occipital bone 1, ethmoid bone 1, temporal bone 2). There is a brain in the cranial cavity. The brain is connected with the spinal cord in the spinal canal. The brain and spinal cord are the centers that command and regulate various physiological activities of the human body.

There is a brain in it. The brain is connected with the spinal cord in the spinal canal. The brain and spinal cord are the centers that command and regulate various physiological activities of the human body. The fontanel of children with small eye spots is usually closed within 12 ~ 18 months. If it is closed prematurely, microcephaly can be formed, accompanied by mental retardation.

Oxygen head deformity, also known as tower skull, has a high vertex, which leads to abnormal proportion to face, which is caused by premature closure of sagittal suture and coronal suture. It can be seen in congenital diseases, that is, head syndactylia, that is, Apei't syndrome. Square-headed skull, with a protruding forehead from left to right and a flat square top, is found in rickets or congenital syphilis in children.

The forehead, parietal bone, temporal bone and occipital part of giant skull (1arge skull) are round and swollen, and the neck vein is full, but the face is smaller. Due to the increase of intracranial pressure, the eyeball is compressed, which forms a special manifestation of binocular downward vision and sclera exposure, which is called sunset phenomenon and is seen in hydrocephalus.

The length of the long skull from the top of the skull to the mandible is obviously increased, which is seen in Menvan syndrome and acromegaly. Deformirig skull is common in middle-aged people, which is characterized by enlarged deformation of the skull, accompanied by thickening and bending of long bones, and is seen in deformed osteitis (paget disease).