Hi, I have a question and I hope anyone could answer it:
Given below is a simple diagram of the human kidney cut open longitudinally. Answer the following questions:
(i) Give the definition of excretion.
(ii) Name the units of the kidney.
(iii) Why does the cortex of the kidney show a ‘dotted’ appearance ?
(iv) Mention two functions of the kidney.
(v) Write two differences in the composition of the blood flowing through blood vessels A and B.