(a(i))[2]
Identify the structures marked X and Y in Fig. 8.1.
(a(ii))[1]
State the name of the effector in the reflex example shown in Fig. 8.1.
(a(iii))[1]
Describe the stimulus illustrated in the example shown in Fig. 8.1.
(a(iv))[2]
State any two features of reflex actions.
(b)[2]
Calculate how many times greater the length of the longest neurones is than that of the shortest.
(c)[1]
State the name used for the junction between neurones.