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Hailey is babysitting her 2-year-old nephew for the first time. While her back is turned, he touches his index finger to the pan she just took out of the oven. He pulls his finger away quickly, and a few seconds later begins to scream. Why does it take longer for him to scream than to pull away his finger?

Respuesta :

Answer: Hand-withdrawal reflex involves only the spinal cord, so it takes time before the information about pain reaches the brain

Explanation:

When baby touches the pan with his index finger and take quite a  bit time as the thermal receptor in the hand sense the stimuli and carries this information to the spinal cord which in turn send it to the brain.  Finally brain sense it and passes the information to  the hand to change its position by giving the pain signals.

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