What is the function and location of the nephrons?

Answer 1

The nephrons are found in the kidneys (about 1 million in each kidney). These structures are responsible for filtering the blood and then reabsorbing wanted substances further down the nephron. Blood reaches the top of the nephron (called the glomerulus), and the smaller molecules, such as glucose, water, urea and ions diffuse across the glomerular membrane. Further down the nephron, at the convoluted tubules, the glucose and some of the water and ions are reabsorbed back into the bloodstream, either by diffusion or by active transport, if the substances need to go against a concentration gradient. What's left in the nephron is a mixture of excess water and ions, as well as the toxin urea. These pass out of the nephron and through the ureters into the bladder, as urine.

Answer 2

There are 2 type of nephron.

1 Cortical wich is close to the outer part of kidney called cortex

2 Juxtamedullary which is close inner part of kidny called Medulla

In normal condition of wather availability cortical nephron maintain blood volume while in shortage of wather Juxtamedullary nephron reserve water to produced concentrated Urine

Answer 3

Each kidney have about one million nephrons. Most of them are present near the surface or cortex of the kidney. There are few nephrons, which are present near the medulla. They are called as justraglomerular nephrons.