Central nervous system

Our computer has a central processing unit, which plays a very important role in the computer and controls almost the entire process of the computer. We have a central nervous system in our body, which can drive our body to adapt to the external environment. It can be seen how important this system is to our body's internal environment, so we must do a good job of health care in our daily life.

The central nervous system is used to regulate our body's internal environment. The central nervous system may be relatively unfamiliar to many people, but its importance is self-evident, and we should learn more about it in daily life. Symptoms of imbalance should be treated promptly.

The central nervous system (CNS) is the main part of the nervous system, including the spinal cord located in the vertebral canal and the brain located in the cranial cavity; it is often located in the central axis of the animal body and is composed of obvious cerebral ganglia, nerve cords or the brain and spinal cord and the connecting components between them. In the central nervous system, a large number of nerve cells gather together to organically form networks or circuits; their main functions are to transmit, store and process information, produce various psychological activities, and dominate and control all behaviors of animals.

composition

Central nervous system of vertebrates: The brain of vertebrates is located in the cranial cavity and the spinal cord is located in the vertebral canal. The central nervous system of vertebrates develops from the neural tube on the dorsal side of the body during the embryonic period. The head end of the neural tube becomes the brain, and the tail end becomes the spinal cord. The neural tube cavity develops into the ventricles in the brain and into the central canal in the spinal cord. The brain initially consists of three brains: the forebrain, midbrain, and rhombencephalon, which later evolve into the telencephalon, diencephalon, midbrain, cerebellum, pons, and medulla oblongata.

Many nerve fibers in the central nervous system of vertebrates are myelinated. When they are gathered together, they appear white to the naked eye and are called white matter. On the contrary, the area where nerve cell bodies are concentrated appears gray to the naked eye. It is composed of a large number of nerve cell bodies and a large number of synapses on the dendrites and is called gray matter. In the central nervous system, gray matter masses with clear boundaries, which are composed of clusters of nerve cell bodies with the same function, are called nerve nuclei. The neural activities in the spinal cord are mainly reflex activities carried out on a segmental basis; however, many activities of vertebrates are holistic, which depends on the connection between the brain and the spinal cord. There are many longitudinally running nerve fiber bundles in the central nervous system. There are also many connecting fibers between the left and right sides of the brain and spinal cord. The thickest of these is the corpus callosum between the two hemispheres of the cerebral hemispheres.

We know that there is a central nervous system inside the human body. If the center is damaged, it can easily cause daily disordered behaviors, which is very important to the human body. Therefore, we must pay more attention to protecting our human nervous system in daily life. For some paralyzed patients, most of them are caused by damage to the central nervous system.