The nervous system is responsible for detecting stimuli (changes to the internal and external environment), processing the information and carrying out an appropriate response.The nervous system is made up of billions of specialised cells called neurones.Neurones transmit electrical signals around the body.Electrical communication is a much faster and more targeted response than chemical communication.
The nervous system allows rapid communication between specific parts of the body and the response is restricted to a specific part of the body. The response is short-lived, temporary and reversible.Neurones communicate with other neurones by secreting chemicals called neurotransmitters. These neurotransmitters bind to receptors on the target cell and stimulate the target cell.
The nervous system allows rapid communication between specific parts of the body and the response is restricted to a specific part of the body. The response is short-lived, temporary and reversible.Neurones communicate with other neurones by secreting chemicals called neurotransmitters. These neurotransmitters bind to receptors on the target cell and stimulate the target cell.