NEET BIOLOGY

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: -A somatic reflex is an involuntary response to a stimulus, such as pulling one’s hand away after touching a hot stove. The nervous system is split into the central nervous system (i.e., the brain and spinal cord) and the peripheral nervous system (i.e., nervous system outside of the brain and spinal cord).

Detailed explanation-3: -The brain or spinal cord receives input from these sensory nerve cells, which triggers the motor neurons. The hand muscles receive the signal from the motor neurons to remove the hand from the hot plate. As a result, the reflex to touching a hot plate is to remove one’s hand and hence is a response.

Detailed explanation-4: -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-5: -Withdrawal Reflex: The withdrawal reflex is a type of spinal reflex that functions to protects body parts against stimuli that could cause damage. This type of reflex occurs when your hand touches a hot stove in order to protect your hand from burning.