What is a frog?
Gill is a vital organ used by fish and other water animals to breathe oxygen extraction from the surrounding water. On most of the aquatic animals that use the gills for breathing, they are located on the head or near it and are protected by a structure called Gill Clap. These specialized respiratory organs work by filtering oxygen from the water as they pass numerous fibers. Like the lungs, oxygen is absorbed into the blood through the thin walls of small blood vessels. To gain enough oxygen to support life, a large amount of water must go through and scientists believe it has been used by various creatures for millions of years.
Most of the aquatic animals that remain submerged underwater are used by gills for breathing. Examples include fish, eel and crabs and frogs doing the work that the lungs perform in animals breathing air. The primary function of the gills is the extraction of oxygen from the water and the releasing Caoxide rbon. Usually the gills are placed on or near the animal's head with one on each side and the number of sAD varies depending on the type of aquatic animal. Each of them is protected by a structure called GILL CLAP, which has a long, deep, slightly curved slot in the skin. The boy covers and protects the structure of the gills and also helps to direct the water over its surface.
Gill works by filtering a huge amount of water that flows through the structure. When the water enters through the flap, large particles are removed by structures called GILL-A-Estates that are made of soft tissue as a screen. Then the water reaches the fibers that consist of reddish soft tissue and look similar to a comb with fine teeth. The fibers have a lot of surface surfaces of the exposed water with a number of small thin -walled blood vessels very close to the secure membrane.
When water passes through the fibers, oxygen is able to pass through the walls of small blood vessels and enter the bloodstream. Carbon dioxide is also able to leave blood through the wallsy blood vessels to be released back into the gills. Because there is much lower oxygen concentration in the water than in the air, the gills must pass through the gills to give enough gas to keep life. In addition to water, which is naturally attracted in swimming a water organism, many animals are able to suck more by “drawing” their gills when another amount is needed. The gills are extremely effective respiratory bodies that many scientists believe have been employed for millions of years since the first creatures that began in the sea.