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3 functions of the N.S. 1.Sensory input – sensory neurons carrying impulses from sense organs to CNS 2. Integration – interneurons (found only in the CNS) interpreting the sensory signals and creating a response
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Nervous Systemcommunication and coordination network throughout the
animal’s body
Neuron – nerve cell specialized for carrying signals from one part of the body to another
Nerve – communication line made from bundles of neuron fibers wrapped in connective tissue
Divisions of the Nervous System
• CNS – central nervous system
• Brain and spinal cord
• PNS – peripheral nervous system
• Nerves that carry impulses in and out of the CNS
3 functions ofthe N.S.
1. Sensory input – sensory neurons carrying impulses from sense organs to CNS
2. Integration – interneurons (found only in the CNS) interpreting the sensory signals and creating a response
3. Motor output – motor neurons conducting signals from integration to effector cells (muscle cells) *(effector cells perform body’s responses)
NEURONS
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