Notes - 9-7-06 - Building Blocks

Notes - 9-7-06 - Building Blocks - The Building Blocks:...

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The Building Blocks: Neurons, neurotransmitters, and glands I. The building blocks The Human Body exhibit in Houston Structure of the nervous system -The Nervous System Flowchart I. Central Nervous System (CNS: brain and spinal cord) II. Peripheral Nervous System A. Somatic Nervous System (nerves going to skeleton and muscles) B. Autonomic Nervous System (Self-Ruling) 1. Sympathetic Nervous System (SNS: activation, fight or flight response) – certain kinds of hormones; when simulated the heart rate increases, breathing rate increases. 2. Parasympathetic Nervous System (PNS: relaxation, vegetative system) – stimulation results in relaxation Nerves and neurons -All nerves are pretty much alike -Dendrites receive signals (if they receive enough they will cause the cell body to fire) -All or none principal – cell either fires or it doesn’t fire -Na and K ions – dependent on hydration level -Axon (transmitter) Neural communication: Neurotransmitters -Neurotransmitters – 2 primary influencers of our body (*Look Up)
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Notes - 9-7-06 - Building Blocks - The Building Blocks:...

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