Fish gills are organs that allow fish to breathe underwater. Most fish exchange gases like oxygen and carbon dioxide using gills on both sides of the pharynx (throat). Gills possess tissues resembling short threads, referred to as gill filaments or lamellae .

Gills are an essential part of the respiratory system of aquatic animals such as fish, crabs, and lobsters. They are responsible for extracting oxygen from water and expelling carbon dioxide. Understanding how gills work is crucial to understanding the biology of these aquatic creatures and their adaptations to their environment.

2023年1月2日 · Fish gills are crucial respiratory organs that enable fish to breathe underwater by extracting oxygen dissolved in water and eliminating carbon dioxide from their bodies. Typically situated on each side of the fish’s head, these gills are …

2024年9月28日 · Gills are the primary respiratory organs in most fishes. They are composed of gill arches, filaments, and lamellae, which provide a large surface area for oxygen exchange. Water enters through the fish’s mouth and flows over the gills, where oxygen is absorbed into the blood while carbon dioxide is expelled.

2025年1月24日 · The gills are protected by a gill cover in teleosts and many other fishes but by flaps of skin in sharks, rays, and some of the older fossil fish groups. The blood capillaries in the gill filaments are close to the gill surface to take up oxygen from the water and to give up excess carbon dioxide to the water.

Though gills in fish occupy only a small section of their body, the extensive respiratory surface produced by the filaments renders the whole organism with efficient gas exchange. Fish take in oxygen-rich water via their mouths and pump it over their gills.

Many aquatic animals have developed gills for respiration which are specifically adapted to their function. In fish, for example, they have: A large surface area to allow as much oxygen to enter the gills as possible because more of the gas comes into contact with the membrane; Good blood supply to maintain the concentration gradient needed

The red gills of this common carp are visibly exposed as a result of a gill flap birth defect.. A gill (/ ɡ ɪ l / ⓘ) is a respiratory organ that many aquatic organisms use to extract dissolved oxygen from water and to excrete carbon dioxide.The gills of some species, such as hermit crabs, have adapted to allow respiration on land provided they are kept moist.

2022年7月26日 · (1) The main function of gill in fish is respiration. Through the gills, the fish absorb dissolved oxygen (O 2) in the water and release the carbon dioxide (CO 2) produced by respiration. (2) In addition to respiration, the gills play a role in maintaining the balance of salt by assisting in the removal of certain wastes.

2024年3月19日 · The ability of fish to breathe underwater relies on an incredibly efficient respiratory system centered around their gills. As water flows over the feathery gill filaments, thousands of tiny blood vessels allow dissolved oxygen to diffuse into the bloodstream while carbon dioxide waste diffuses out.