@@Nephron2350 jab bacha paida hota he tu interestium ka concentration bhi 300 osmol hi hota he maagr jab pehli par urine pass hta he loop of henle se to ascending loop of henle filtrate se nkcc pump ka zarye ions bahir phainka shuru kar defa he left right dono sight phr jab dubara se 300 osmol wala filtrate ata he tu to usko bahir wala mahool highly concentrated lagta he isi leye wo pani ko bahir nikal deta he
