Question

___ acts as the main center of reflex action.

Answer 1

Spinal cord:

1. The spinal cord and the brain comprise the central nervous system. The spinal cord is a tube-like structure that extends downward from the medulla to the vertebral column.
2. The spinal cord serves as the main centre for reflex action.
3. It facilitates most of the reflexes in the body's trunk and limbs, such as the movement of the hands away from hot objects on coming in contact with them.
4. Further, simple reflex responses also occur due to the action of the spinal cord.

Final Answer: Spinal cord acts as the main center of reflex action.