THORAX ABDOMEN AND PELVIS

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MEDICAL

NERVES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
When you touch the hot handle of a pan, this causes a reflex which happens at the ____ level without having the brain process the impulse first.
A
Brain Stem
B
Frontal Lobe
C
Spinal Cord and Parietal Lobe
D
Spinal Cord
Explanation: 

Detailed explanation-1: -If you touch something that is very hot, your hand moves away quickly before you even feel the pain. You don’t have to think about it because the response is a reflex that does not involve the brain. A reflex is a rapid, unlearned, involuntary (automatic) response to a stimulus (change in the environment).

Detailed explanation-2: -At the point of contact with the hot pot, skin receptors quickly send nerve impulses (electrical) to the spinal cord (central nervous system) via sensory neurons. In the spinal cord, the impulses are processed, and a response is relayed back.

Detailed explanation-3: -An important reflex initiated by cutaneous receptors and pain receptors is the flexor reflex. We have all experienced this reflex after accidentally touching a hot stove or a sharp object, as we withdraw our hand even before we consciously experience the sensation of pain.

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