NEET PG DENTAL EXAM

Detailed explanation-1: -What happens when you accidentally touch a hot plate? Sensors on your finger get activated and the information is relayed via nerves to your spinal cord (nervous system), which decides to immediately jerk back the hand by sending a signal to the arm muscles.

Detailed explanation-2: -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-3: -Assertion: If your hands come in contact with hot objects (perhaps stove burner, hot plate, hot pan or a hot potato), a reflex causes you to immediately remove your hand before the message from the brain. Reason: Heat shock reflex arc is polysynaptic and the relay neuron also sends the information to the brain.

Detailed explanation-4: -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.