The Nervous System

The nervous system is the body's computer. It has a sensory input system and the motor output system. The input and output nerves are the PNS and the brain and spinal cord are the CNS. The central nervous system controls all basic bodily functions and responds to external changes. The peripheral nervous system provides a complete network of motor and sensory fibers connecting the central nervous system to the rest of the body while the autonomic nervous system parallels the spinal chord but is separately involved in control of exocrine glands, blood vessels, viscera and external genitalia. Like all organs, the components of the nervous system are made up of tissue. Nervous tissue is made up of two different types of cells, the neurons and neuroglia. The neuroglia cells are specialized cells that allow it to perform nervous system functions. In the CNS thee are four types of glial cells, the astrocytes, microglia, ependymal cells and oligodencytes. Neurons are rather bizarre-looking cells often with many branches and appears to be a tail. Each part has a specific function. An excitable cell carries a small electrical change when stimulated. A cell that is not stimulated or excited is called a resting cell and is said to be paralized. A cell that is more positive than resting is called depolarized. I've also learned that the purpose of meninges is to cover the delicate structures of the brain and spinal cord. There were also common disorders in the nervous system, the inflammation of the peripheral nerves called Guillan-Barre syndrome, meningiti,botulism, etc.


What i could possibly suggest about this topic is that, the report could have been better if the reprorter have made her own blood-waking activities and she must discussed it in her own knowledge having her own examples. However the report have been delivered well.