NEPHRONS-The Kidneys' Filtration Units. Nephrons are microscopic tube-like structures in the kidneys that filter the blood and cause wastes to be removed.They are the most basic structures of the kidney's anatomy, and are an integral part of the urinary system.Each kidney contains over one million of them.EPHRONS-The Kidneys' Filtration Units. Nephrons are microscopic tube-like structures in the kidneys that filter the blood and cause wastes to be removed.
A member of the sunfish family, the bluegill is one of the most popular freshwater game fish with anglers because of its tasty flesh and the fact that it puts up a pretty good fight for its size.
They have a terminal mouth, ctenoid scales, and a lateral line that is arched upward anteriorly. The bluegill typically ranges in size from about four to 12 inches, and reaches a maximum size just over 16 inches. The largest bluegill ever caught was four pounds, 12 ounces in 1950.