Question

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Answer 1

I) 1-renal cortex
2-renal medulla
3-renal pelvis
4-ureter
ii)renal medulla has a striped appearance because it consists of the collecting ducts of nephrons.
iii)the fluid is urine and the main nitrogenous wastes ammonia.
iv)nephron
v) 1 ultrafiltration
2 selective reabsorption
3 tubular secretion.