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Our nervous system makes us aware of our surroundings. The nervous system controls all other body systems and the sense organs. It is an important organ system in our body. It helps us to see, read, write, think, learn, feel, respond, etc. The nervous system controls all other body systems and the sense organs.
The brain's average weight is about 1.5 kg.
Parts of Brain
Spinal cord in the human body
Structure of a Neuron
Example: When we touch a sharp object, the nerve endings in the finger feel the pain as the message reaches the spinal cord through the sensory nerve. The spinal cord sends the command back through the motor nerve to the muscles of the hand to move away.