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.
Natural History. Bluegill are prolific breeders and normally spawn in late spring and early summer when water temperatures rise within the range of 70 to 75 degrees Fahrenheit (21.0 to 23.8 degrees Celsius). A male bluegill will sweep or fan out a dishâshaped nests.