Give scientific reasons for the following statements:
The foot is very suddenly lifted off as soon as it comes in contact with a burning coal.

Explanation

It is a reflex action - In this phenomenon, the impulse commencing from the sensory organ (the skin of the foot) enters into the spinal cord through the sensory nerve fibres. The impulse is analysed in the spinal cord and the responsive motor impulse is transmitted through the motor nerve fibres to the effector organ (the foot muscles) to contract and thereby show the response. So the foot is very suddenly lifted off as soon as it comes in contact with a burning coal.