(a) State the relationship between receptors, the central nervous system and the effectors.
(b) State that the nervous system – brain, spinal cord and nerves, serves to coordinate and regulate bodily functions.
(c) Outline the functions of sensory neurones, relay neurones and motor neurones.
(d) Discuss the function of the brain and spinal cord in producing a co-ordinated response as a result of a specific stimulus in a reflex action.