Nervous System Final Project

Brain & Spinal Cord3 types of Neurons

http://http://youtu.be/4M82WwFACLg

The nervous system is divided into two parts:Central and Peripheral.The Central consist of two body parts;Brain and Spinal Cord.The Peripheral only consist of the sensory neurons and motor neurons.The Brain is the center of the nervous system .It is located in the head.It send messages to the body when to listen,see,balance,taste,touch,and smell.The Peripheral Nerves connects the central nervous system to the limbs and organs.Sensory neurons that transmit information to the central nervous system from the five senses.Inter neurons relay signals between neurons or groups of neurons, are responsible for the processing of information by the brain.Motor neurons relay signals from the central nervous system to the other parts of the body. Signal transmission-Neurons are cells specialized for communication. 

Disorders.
Parkinson’s disease is characterized by progressive loss of muscle control, which leads to trembling of the limbs and head while at rest, stiffness, slowness, and impaired balance.The primary symptoms of Parkinson’s disease are all related to voluntary and involuntary motor function and usually start on one side of the body. The main symptoms of Parkinson’s disease are movement-related, progressive loss of muscle control and continued damage to the brain can lead to secondary symptoms like difficulty swallowing,excessive salivation,diminished sense of smell,and increased sweating.There is currently no treatment to cure Parkinson’s disease.
Alzheimer’s disease is an irreversible, progressive brain disease that slowly destroys memory and thinking skills, and eventually even the ability to carry out the simplest tasks. In most people with Alzheimer’s, symptoms first appear after age 60. Estimates vary, but experts suggest that as many as 5.1 million Americans may have Alzheimer’s disease.Memory problems are typically one of the first warning signs of cognitive loss, possibly due to the development of Alzheimer’s disease.A decline in other aspects of cognition, such as word-finding, vision/spatial issues, and impaired reasoning or judgment, may also signal the very early stages of Alzheimer’s disease.

Health behaviors, such as eating a well-balanced diet, exercising regularly, and getting enough sleep, affect the health of your nervous system. Keep your nervous system healthy by protecting it from injury. To protect your head and spine, wear a helmet and protective gear while riding a bike, motorcycle, or other open vehicle or when playing a contact sport or engag- ing in activities such as skateboarding. Before diving, always check water depth and look along the bottom for protrud- ing logs or rocks. Wear a safety belt when driving or riding in a motor vehicle. Avoid the use of alcohol and drugs,which can cause permanent damage.

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