Neurons within the brain and spinal cord
![neurons within the brain and spinal cord neurons within the brain and spinal cord](https://i.pinimg.com/originals/53/6d/3a/536d3ab1d74616a8892789604b0d0a2e.jpg)
In general, they have the following components:Ĭell body: the nucleus and cytoplasm containing organelles are contained here.
![neurons within the brain and spinal cord neurons within the brain and spinal cord](https://i.pinimg.com/originals/a6/6a/e8/a66ae80e82ac26b665438a53bf9220dd.jpg)
Neurons come in a variety of shapes and sizes. The major function of the nervous system is provided by neurons. The neural crest cells migrate to give rise to most of the peripheral nervous system. From the anterior neural tube additional folding and development produces the complex regions of the brain. Embryologically, the central nervous system is derived from the neural plate which closes to form the neural tube. The two major divisions of the nervous system are the central nervous system (CNS), consisting of the brain and spinal cord, and the peripheral nervous system (PNS) consisting of the peripheral nerves, nerve receptor endings, and ganglia distributed throughout the body. Nervous System Nervous System Return to the Histology Tutorial menu.