BIOL 1080 Lecture Notes - Lecture 8: Peripheral Nervous System, Autonomic Nervous System, Reflex Arc

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17 Dec 2015
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Components of the control and communication network are: the central nervous system. Spinal cord: the peripheral nervous system. Autonomic nervous system = involuntary: also . The nervous system integrates/coordinates input and output: epinephrine release: also thoughts, emotions, memories, etc, norepinephrine is the neuro transmitter that stimulates, sensory neurons synapse at the spinal cord, but not all, eg. Reflex arc information goes immediately to the brain! Allows for rapid reflex without a delay. Note that the brain will still receive information allows a memory. The 5 major cell types of the adult human cns: neurons, oligodendrocytes (cns) and schwann cells (pns) (2 and 5 are sometimes grouped together as glial cells , astrocytes, microglia, ependymal cells. Neurons: unidirectional information flow, impulse travels across axon. Dendrites receive information from other neurons or from the environment. The cell body controls the cell"s metabolic activities. The cell body integrates input from other neurons.

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