BIOL 1107 : chapter 48 study guide
Document Summary
[48. 1 neuron organization and structure reflect function in information transfer] (introduction to information processing) three stages in information processing: sensory input, integration, and motor output. Motor neurons- motor output relies on these neurons that exit the processing centers in bundles called nerves and generate output by triggering muscle or gland activity (ex: transmit signals to muscle cells, causing them to contract) Central nervous system (cns)- the neurons that carry out integration are organized into the brain and a longitudinal nerve cord (spinal cord) Peripheral nervous sytem (pns)- the neurons that carry information into and out of the cns. 1048 fig 48. 3: sensor sensory input (pns) integration (cns) motor output (pns) effector (neuron structure and function) Cell body- where most of a neuron"s organelles, including its nucleus, are located. Dendrites- high branched extensions that receive signals from other neurons. Axon- a single extension that transmits signals to other cells: much longer than dendrites.
