From a tiny sample of tissue no larger than a grain of sand, scientists have come within reach of a goal once thought unattainable: building a complete functional wiring diagram of a portion of the ...

Muscles and glands are called effectors. The diagram summarises how information flows from receptors to effectors in the nervous system. Receptors are groups of specialised cells. They detect a ...

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 ...