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5 Parts of a Reflex Arc
Responds to stimulus (change in external/internal environment); Distal end of dendrites, sensory structure; Initiate impulse via local depolarization (graded potential)
Receptor to axon termination in CNS; Transmits afferent impulse
Sensory impulse to motor impulse; Direct (monosynaptic) or polysynaptic region in CNS
Efferent impulses from integration center to effector
muscles and glands