BI 103 Lecture Notes - Lecture 14: Sciatica, Peripheral Nervous System, Axon Terminal

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25 May 2017
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Nervous system coordination and communication with electrochemical signals. Brain, spinal cord - central nervous system. You must take in sensory information (nerves) then the brain and spinal cord interpret the information (integration - brain and spinal cord) Which then breaks down into somatic(voluntary) and autonomic(involuntary) Sympathetic: to go along with autonomic: something, increase body. Parasympathetic: goes against the body, shut down digestion during exercise sympathetic and parasympathetic create a balance. Neuron cells communicate information through electrical signals (p. 102) Glial cells: support the neurons (necessary for neuron or diseases arise) Sodium only has to move between the fat of neuron becomes sodium jump. Multiple sclerosis - white cells attack the fat of the cells (slow down of nervous system) Nerves, bundle of nerves, axon -peripheral can repair itself. Damage to brain and spinal cord no repair. Sciatica - weakness, difficult moving legs, pinching . Carpal tunnel - tingling or pain in fingers, inflammation. Respond immediately to pain ->reflex automatic pain.

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