The kidney's function in filtration. The renal tubules located with in the kidney's and also known as nephrons, are the functioning units of the kidney's. Blood carries nutrients and waste. The renal tubules are surrounded by a capillary network so the blood can expel the waste material that is collects from the body. the renal tubules also replace nutrients and water that is still needed back into the capillaries.
This arrangement prevents these molecules from being eliminated from the body in the urine.
In these capillaries some salts and water is reabsorbed into the blood from the tubules.
ambot
glomerular,capsules,Convoluted tubules ,kidney loops are the parts of Nephron... Nephron is the basic unit of a kidney.... group of nephrons constitute the kidney.. so you can't see all of them as individuals... I think you may have got your answer... Thanks.
T-Tubules, I think...
I think it is su-
Yes. Capillaries are incredibly tiny so I think it's impossible to count them all.
i think yes i think yes
i think it is capillaries
i think its Europe
Capillaries - they are the smallest vessels that serve as arteries and veins.
sarcoplasmic reticulum, i think. either that are T tubules
wastes i think
I think the answer you are looking for is the glomerulus.
AnswerI think you are referring to physiology, like the kidneys, right? In that case... Secretion is an active process. In the kidney tubules, somethings, like K+ is secreted from the peritubular capillaries, into tubular cells, and then out into the lumen to mix with the fluid.Excretion is passive. What is excreted by the kidneys is everything that is not reabsorbed and what is secreted. So that means, after all the re-absorbing and secreting processes of the cells, everything that's left in the tubules is excreted into the urine.