Reflex Action at Spinal Cord
One of the main reasons for reflex actions to occur at the spinal cord is the need for quick responses to stimuli that are potentially harmful to the body. Here is why reflex actions are mediated at the spinal cord:

Speed of Response
- Reflex actions at the spinal cord allow for rapid responses to stimuli without the need for input from the brain. This is crucial in situations where a quick reaction is necessary to prevent injury or harm.
- By bypassing the brain, reflex actions at the spinal cord help in saving time and ensuring immediate muscle contraction or relaxation in response to a stimulus.

Protection and Survival
- The spinal cord acts as a protective mechanism for the body by allowing for reflex actions that can prevent further damage or injury. For example, the withdrawal reflex allows us to quickly remove our hand from a hot surface without having to wait for a signal from the brain.
- This automatic response mechanism is essential for survival in dangerous situations where a delayed reaction could be detrimental.

Efficiency
- Reflex actions at the spinal cord are more energy-efficient as they do not require the involvement of higher brain centers. This allows the body to respond to stimuli quickly and efficiently, conserving energy for essential functions.
- The neural pathways involved in reflex actions at the spinal cord are well-established and require minimal processing, leading to faster and more efficient responses.
In conclusion, reflex actions at the spinal cord play a crucial role in protecting the body, ensuring rapid responses to stimuli, and conserving energy. This mechanism allows for quick and efficient reactions that are essential for survival and well-being.

The reflex action between input and output nerve are made at spinal cord as the brain is at quiet a distance from the target organs and giving signals to brain for complete intrapatation will take enough long to time on which the target organ can be damaged hence the reflex action between input and output nerve is made at spinal cord as it is near and easy to reach by the target organ please ignore any mistakes