j&d+notes

The Nervous notes we are going to do a live newscast in front of our peers. Many of the problems that occur in the nervous system are, stroke, brain disorders, nerve and muscle disorders, seizures, back pain, chronic pain. Central nervous system is the brain. The brain contains millions of nerve cells (neurons) that control every thing you do. Think how fast your hand pulls back from a hot stove. That is your brain at it's best. A system of nerves connects the brain to the rest of the body. All of the parts of the brain work together but they each have they're own special function. There are 4 lobes of the brain. The Temporal lobe, the Occipital, the Parietal lobe, and the Frontal lobe. Symptoms of nervous system malfunctioning are, back pain, difficultly swallowing, neck pain, and dizziness. Nervous system keeps the body in homeostasis.Neurons: nerve cells, send the message that neurons carry throughout the body are called nerve impulses. neurons have threadlike extensions called dendrites. There are many dendrites and just one longer axon. Sensory neurons are the nerves that give us the ability to react to the internal or external environment and converts each stimulus into a nerve impulse. Many symptoms you may have are problems with sight, hearing, taste, smell, and feeling (sensations). You also may have problems with thinking and making sense of things. The nervous system is a very complex system in the body. It has many, many parts. The nervous system is divided into two main systems, the central nervous system (CNS) and the peripheral nervous system. The spinal cord and the brain make up the CNS. Its main job is to get the information from the body and send out instructions. The peripheral nervous system is made up of all of the nerves and the wiring. This system sends the messages from the brain to the rest of the body.