Question

(a)what are the main components of human urine ?
(b)in which part of the nephron all useful materials are completely reabsorbed?
(C)among the renal artery and renal vein which one has more nitrogenous waste material​

Answer 1

a. It consists of water, urea (from amino acid metabolism), inorganic salts, creatinine, ammonia, and pigmented products of blood breakdown, one of which (urochrome) gives urine its typically yellowish colour.