(b) Table 2.1 shows some processes that occur in a kidney. In Table 2.1, write the letter of the part shown in Fig. 2.1 where each process occurs.
You must put one letter in each box. You may use the same letter more than once.
Table 2.1
process
letter
filtration of blood
reabsorption of most of the solutes from the filtrate
water is absorbed by osmosis to determine the
concentration of urine
unfiltered blood returns to the renal vein

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.