The Structure Of The Nervous System

The nervous system is a complex collection of nerves and specialized cells known as neurons that transmit signals between different parts of the body. The structure of the nervous system has two components: the peripheral and central nervous system. The peripheral nervous system adverts to the nervous system outside the brain and spinal cord. The parts include the cranial nerves, spinal nerves and their roots and branches, peripheral nerves, and neuromuscular junctions. In the system, bundles of nerve fibers or axons direct information to and from the central nervous system. They connect the brain and spinal cord with receptors, muscles, and glands. The central nervous system is in control of most functions of the body. It consists of the brain and spinal cord.The brain is the

It receives input from the sensory organs and sends output to the muscles. The brain consists of 86 billion nerve cells. The spinal cord is the essential structure between the body and brain and brain to body.The brain is located in the cranial cavity and the spinal cord in the spinal cavity. The cranial and spinal cavities are subdivisions of the dorsal body cavity which is located along the posterior surface of the human body. The nervous system consists of: the brain, spinal cord, sensory organs, neurons, afferent neurons, efferent neurons, interneurons, neuroglia, ganglia, mixed nerves , cranial nerves,spinal nerves, and etc. There are twelve pairs of cranial nerves that extend from the inferior side of the brain.Roman numerals are used to identify the twelve cranial nerves pair based off of its location along the anterior-posterior axis of the brain. Also, each nerve has a specific name such as, olfactory, optic,etc, which is