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NERVOUS SYSTEM!!! Brenda Fuentes Devin Williams Tye Brown INTRODUCTION • This is the introduction to the new specimen’s nervous system. Their nervous system controls the senses, movement, blood-flow, and daily activity. Parts of The System • Brain • Spinal Cord • Central Nervous System • Peripheral Nervous System How the System Works… A message is sent through the body with the use of neurons. They are in a line that transmits the messages with electrical currents and an amazingly fast chemical. They are sent through the CNS and PNS, the central and peripheral nervous systems(respectively). How the System Works… The difference between the CNS and PNS, is that the central nervous system is entirely encased in our bones. The CNS has a job that receives the stimuli from the PNS and make decisions about what signals to send back. The PNS is in cells, and has a job of sending impulses from the CNS to the limbs and organs. It also receives sensory information and transmits it to the CNS. How the System Works… The five senses(seeing, hearing, taste, touch, and smell) are things that our body uses to detect our surroundings. Hearing is used by the ears to pick up sound waves in the air that are caused by objects interacting. Seeing is when our eyes see the light around something and transmit the images to the brain. Taste and smell are interpreted from tiny receptors found in the nose and on the tongue. When the nose detects smell, it sends it to the brain while taste buds detect and transmit flavors. How the System Works… The difference between somatic and autonomic nervous system is that the autonomic(auto) means “without thought.” The somatic nervous system is when you use your nervous system in voluntary actions like kicking a soccer ball, snapping your fingers, and scratching your nose when it itches. Autonomic nervous system is when your nervous system does something that you don’t have to think about before doing like breathing and blinking. Interaction With Other Systems The nervous system interacts with every other system in the body. Your heart(cardiovascular) couldn’t beat without your brain transmitting the message to do so. Your body wouldn’t know when to breathe(respiratory) without nerves sending messages from the brain. The nervous system sends a message to every other system so that the system will do what it’s supposed to do. Favorite Website • Why: http://www.kidsbiology.com/human_biology/index.php This is our favorite website because we got most of our information from it and it was easy to understand. References http://www.biology4kids.com/files/systems_m ain.html http://www.kidsbiology.com/human_biology/i ndex.php http://www.musclesculpt.com/index.html