(a)[4]
Fig. 1.1 displays some blood vessel and organ names. The boxes on the left contain the names of blood vessels that carry blood to organs. The boxes on the right contain the names of organs that receive blood. Draw straight lines from each blood vessel to the organ to which it carries blood. Draw four straight lines. The blood vessels listed are: pulmonary artery, pulmonary vein, renal artery, vena cava. The organs listed are: heart, kidney, lungs.
(b)[4]
Table 1.1 gives three kinds of blood vessel, the thickness of their walls and whether valves are present. Complete the descriptions of the blood vessels in Table 1.1.