6_Unit2.1_NS_Intro copy

E integration and regulation theoretically based cns

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Unformatted text preview: ., integration and regulation) theoretically based. CNS--is brain and spinal cord Nervous System Overview Central NS Peripheral NS PNS- so everything else. we are interested in musclualr and sensory aspects its only a small subject of the total PNS !  Brain !  Spinal Cord PNS is critical for communication between the CNS and other organ systems •  Integumentary, muscular, digestive, respiratory, circulatory, endocrine, reproductive, lymphatic, urinary Nervous System Overview neuron--functional unit of the NS are neurons the most prevalent cell in the nervous system?? NEURONS glial cells are--they support neurons-- there is 90% gleal cells only 10 % are neurons. In some ways the system is simple. The functional unit of the nervous system is the NEURON. They receive electrical impulses from other neurons which cause them to either transmit electrical impulses or not. That’s it. Yet think of all the wonderfully complex behaviors we are capable of. 2 7/4/12 Functional Unit of the NS derrrr… but make sure you know it...
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