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The Nervous System Video Anticipation Statements • • • • • Pain happens only in your head. Anyone can be hypnotized. Nerves don’t actually touch each other. Not feeling pain is a good thing. Most people can get along just fine with out senses. • You can control your nervous system. Challenge ? • Are you more right-brained or more left-brained? • Take the Test • Describe/diagram your results below. Connection • Why is it important that reflexes occur without thought? Vocabulary • • • • Central nervous system Peripheral nervous system Impulse reflex Resources • Video – – Human Body: Pushing the Limits: Sensation (open) – Human Body: Pushing the Limits: Brain Power(close) if time allows • Be Nervy – Simulate nerve impulses • Guided Notes • Complete Objective Notes Objectives Notes Describe the peripheral nervous system Function of system – (Copy & label diagram of neuron pg. 589) Describe the central nervous system (Copy & label diagram of brain pg. 592) > Neurons transmit information by > sensory neurons – > motor neurons Function of system – > Brain> cerebrum> cerebellum> medulla- > Spinal Cord Explain the difference between neurons and nerves Describe the peripheral nervous system – Function of system – Collects, sends information to and responds to information from the central nervous systems • Neurons transmit information by – special cells that transfer messages (impulses)around the body by electrical energy • sensory neurons –collect information and send to CNS • motor neurons – respond to information sent from CNS Describe the central nervous system • Function of system – Processes information sent by the PNS – Brain- largest organ in nervous system –mission control • cerebrum- stores memories, controls voluntary movement, detects touch, light, sound, sight, odors, taste; judgment • cerebellum- controls body position and movement • medulla- controls most involuntary processes; life processes – Spinal Cord – connects PNS with brain – relay; initiates reflexes before signal can travel to brain - Explain the difference between neurons and nerves • Neurons are cells that transfer electrical impulses through out the body and nerves are the axon parts of the neurons bundled together with blood and connective tissue