(a(i))[1]
Circle the correct name of the type of blood vessel in each row of Table 6.1.
(a(ii))[2]
State the name and function of the structures present in blood vessel X but absent from blood vessels Y and Z in Table 6.1.
(b)[4]
Identify the names of the structures labelled in Fig. 6.1. organ A organ B blood vessel C blood vessel D
(c)[2]
State the names of two substances that are excreted by the kidneys.
(d)[2]
State the names of two additional organ systems in humans.