(a(i))[2]
State the two components of the central nervous system.
(a(ii))[1]
Describe the nervous system's main role.
(b(i))[2]
State the names of cells H and K in Fig. 4.2.
(b(ii))[1]
Describe one feature of a reflex action.
(b(iii))[1]
State one example of a reflex action.
(c(i))[1]
State one effect of heroin on the nervous system.
(c(ii))[1]
State one long-term effect of excessive consumption of alcohol.