GENERAL HISTOLOGY

Detailed explanation-1: -Answer and Explanation: When you touch a hot stove, a nerve impulse travels up your arm, passes briefly through your central nervous system, and a response is sent down your arm to move your hand.

Detailed explanation-2: -It acts as a communication relay between your brain and your extremities. For example, if you touch a hot stove, the pain signals travel from your finger to your brain in a split second. In just as short a time, your brain tells the muscles in your arm and hand to snatch your finger off the hot stove.

Detailed explanation-3: -Impulses from the sensory cortex are conducted over interneurons to the prefrontal cortex of the cerebrum to be “recorded” as memories that associate the sight of a hot stove with pain. These memories cause you to be more careful when you are near a hot stove.

Detailed explanation-4: -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-5: -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.