(a)[1]
State one function of the nervous system.
(b(i))[2]
State the letters of two structures in Fig. 5.1 that belong to the peripheral nervous system.
(b(ii))[5]
Write the right letters from Fig. 5.1 into the gaps to finish the statements about the reflex arc. A painful stimulus such as a cactus spine is detected by [BLANK] in the skin. An impulse travels along [BLANK] until it reaches the spinal cord. The impulse is passed to [BLANK] and then leaves the spinal cord in [BLANK]. The impulse makes [BLANK] produce a response.
(b(iii))[1]
State the name given to the junction between two neurones.