Central Nervous System
Central nervous system is the nervous system in the structure of nerve cells in vertebrates, including the brain and spinal cord; in high invertebrates such as foci and insects, etc., mainly include the ventral nerve cord and a series of ganglia. The central nervous system is the most complex and complete, especially the cerebral cortex of the cerebral cortex to a high degree of development, become the most important and advanced part of the nervous system to ensure that the coordination of organs of the body activities, as well as the body and the external environment between the unity and coordination. The central nervous system and the peripheral nervous system make up the nervous system and control the biological behavior. The entire central nervous system is located in the back cavity, the brain in the cranial cavity, the spinal cord in the spinal canal; the skull protects the brain and the spine protects the spinal cord. ...