They are usually more numerous, shorter and more branched than axons.Īxons and dendrites are bundled together into what are called nerves. They are long nerve processes that may branch out to convey signals to various areas. Dendrites typically carry signals toward the cell body. The nerve processes consist of axons and dendrites that can conduct and transmit signals.Īxons typically carry signals away from the cell body. Neurons contain nerve processes which are "finger-like" projections that extend from the nerve cell body. All cells of the nervous system are comprised of neurons. Neurons are the basic unit of the nervous system. It also assists in the circulation of nutrients to the brain.ĭAVID MCCARTHY / Science Photo Library / Getty Images Cerebrospinal fluid surrounds, cushions, and protects the brain and spinal cord from trauma. The ventricles are filled with cerebrospinal fluid, which is produced by specialized epithelium located within the ventricles called the choroid plexus. ![]() The network of linked cavities in the brain ( cerebral ventricles) is continuous with the central canal of the spinal cord. Within the central nervous system is a system of hollow cavities called ventricles. Both the brain and spinal cord are protected by a three-layered covering of connective tissue called the meninges. The brain processes and interprets sensory information sent from the spinal cord. It receives information from and sends information to the peripheral nervous system. The central nervous system (CNS) functions as the processing center for the nervous system. ![]() The nervous system monitors and coordinates internal organ function and responds to changes in the external environment. The nervous system is responsible for sending, receiving, and interpreting information from all parts of the body. It is part of the overall nervous system that also includes a complex network of neurons, known as the peripheral nervous system. The central nervous system consists of the brain and the spinal cord.
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