PHYSIOLOGY
CENTRAL NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Reflexes involve only the brain while reactions involve brain & spinal cord
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Reflexes involve only the spinal cord while reactions involve only the brain
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Reflexes involve only the spinal cord while reactions involve brain & spinal cord
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Reflexes involve the brain & spinal cord while reactions involve only the spinal cord
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Detailed explanation-1: -A reflex arc is a connection between perceiving the signal from the nerves and promptly responding to it. In a reflex action, the brain plays no part. The spinal cord, which reacts without thinking about how to respond to stimuli, is in charge of these automatic actions. It elicits no meaningful response in the brain.
Detailed explanation-2: -Immediately, the spinal cord sends back signals to the muscle through the motor neuron. The muscles attached to the sense organ move the organ away from danger. In reflex actions, the signals do not travel up to the brain.
Detailed explanation-3: -Many reflexes start at the muscle or skin and go to the spinal cord. When the action potential reaches the nerve ending, the signal is transferred to another neuron, such as an interneuron or motor neuron. The action potential then travels outside the spinal cord to a muscle.