Information from receptors passes along neurones, as electrical impulses to co-ordinators such as the central nervous system or CNS. The CNS is the brain and spinal cord. Muscles contracting or ...

These move towards the central nervous system (CNS). The CNS is the brain and spinal cord. It coordinates the responses. Messages are then sent back along different neurones to muscles which ...

The peripheral nervous system (PNS) is the system of nerves and ganglia outside the brain and spinal cord. The PNS consists of the peripheral nerves, neuromuscular junctions, cranial nerves ...