(a)[1]
State what the term double circulation means.
(b)[4]
Complete Table 4.1 by filling in the missing entries.
(c)[2]
Complete the drawings of the cross-sections of an artery and a vein so that the differences between these two types of blood vessel are shown. Label the lumen in each drawing.
(d(i))[2]
Sketch arrows on Fig. 4.1 to indicate the route followed by deoxygenated blood from the heart to the lungs.
(d(ii))[5]
Complete Table 4.2 by giving the name of each structure and matching it with the correct letter from Fig. 4.1.
(e)[3]
Outline the functions carried out by the lymphatic system.