(a)[3]
Fill in the table by giving the names of the parts labelled A, B and C on Fig. 3.1.
(b(i))[1]
Name the blood vessel in Fig. 3.1 with the highest urea concentration.
(b(ii))[1]
Name the blood vessel in Fig. 3.1 with the lowest glucose concentration.
(c)[4]
Explain the role of the kidney in excretion.
(d(i))[3]
Define the term hormone.
(d(ii))[1]
State where testosterone is produced in the body.
(d(iii))[2]
State why testosterone is taken by some people to improve sporting performance.
(e)[2]
Predict the concentration after 14 days, assuming the person does not have another injection, and show your working.