what are reflex action? explain spinal and cranial reflex with reflex arc.
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A reflex arc is a neural pathway that controls a reflex. In vertebrates, most sensory neurons do not pass directly into the brain, but synapse in the spinal cord. This allows for faster reflex actions to occur by activating spinal motor neurons without the delay of routing signals through the brain.
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A reflex action is an involuntary or an automatic response to the stimulus for ex -- coughing , sneezing , blinking etc ....... A reflex arc acts as a mechanism of detecting the signal ( input) and responding it by an output action
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