(a)[2]
Name the two parts of the central nervous system marked A and B.
(b(i))[2]
This reflex action involves a receptor and an effector. On Fig. 3.1, draw a label line to the receptor position and mark it R, and another to the effector and mark it E.
(b(ii))[4]
Describe the roles of two named neurones in this reflex arc.
(c(i))[1]
Name the gland C.
(c(ii))[2]
Explain the role of gland C in causing heart rate to increase after a sudden shock.