Describe how a nephron works. How is this similar to counter currents or hydrostatic skeletons?

Some of the nephron functions are the secretion of some solutes, or re-absorption of various solutes. The nephron has cells with different properties, it also helps the kidney regulate blood because it has a unique blood supply. Parts of the nephron like the Bowman's capsule helps filter and removes all the organic wastes, and water.

Counter Currents: Creates concentrated urine based on what the body needs or wants. Loop of Henle's length is based on the amount of water that goes through, it allows the absorption of water to go back into a body.

Hydro-static Skeletons: Found in many cold-blooded organisms, and surrounded with muscles. Hydro-static skeletons play a role in how sea creatures move in the water.