ANAT 215 Lecture Notes - Lecture 5: Somatic Nervous System, Autonomic Nervous System, Central Nervous System

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Master controlling and communication system: most rapid and complex system (uses electric signals for an immediate response) Sensory input (millions of receptors monitoring changes inside and outside the body (stimuli) gathered info from stimuli is sensory input . Integration -> process and interpret, required for decision making. Motor output -> cause a response by activating effect organs (muscles/glands) Red traffic light = stop, integration allows us to brake (requiring a motor output. ) Brain and spinal cord (integration and command centre. Nerves extend to and from brain and spinal cord. Cranial nerves and spinal nerves (communication lines that link all parts of the body to the cns. ) Convey impulses to cns (from sensory receptors throughout body) Somatic afferents (from skin, skeletal muscles, joints) Visceral afferents (from organs within ventral cavity) Transmits impulses away from cns to effector organs (muscles and glands for motor response) Somatic motor nerve fibers that conduct impulses from cns to skeletal muscles (voluntary nervous system)

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