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  2. Fish physiology - Wikipedia

    en.wikipedia.org/wiki/Fish_physiology

    Red represents a higher value (e.g. of temperature or the partial pressure of a gas) than blue so the property being transported in the channels flows from red to blue. In fish a countercurrent flow (lower diagram) of blood and water in the gills is used to extract oxygen from the environment. [6] [7] [8] All basal vertebrates breathe with gills.

  3. Biofluid dynamics - Wikipedia

    en.wikipedia.org/wiki/Biofluid_dynamics

    Biological fluid Dynamics (or Biofluid Dynamics) involves the study of the motion of biological fluids (e.g. blood flow in arteries, animal flight, fish swimming, etc.). It can be either circulatory system or respiratory systems. Understanding the circulatory system is one of the major areas of research.

  4. Hemodynamics - Wikipedia

    en.wikipedia.org/wiki/Hemodynamics

    For this reason, the blood flow velocity is the fastest in the middle of the vessel and slowest at the vessel wall. In most cases, the mean velocity is used. [18] There are many ways to measure blood flow velocity, like videocapillary microscoping with frame-to-frame analysis, or laser Doppler anemometry. [19]

  5. Fish anatomy - Wikipedia

    en.wikipedia.org/wiki/Fish_anatomy

    Blood flow through the heart: sinus venosus, atrium, ventricle, and outflow tract Cardiovascular cycle in a fish Fish have what is often described as a two-chambered heart, [ 43 ] consisting of one atrium to receive blood and one ventricle to pump it, [ 44 ] in contrast to three chambers (two atria, one ventricle) of amphibian and most reptile ...

  6. Blood vessel - Wikipedia

    en.wikipedia.org/wiki/Blood_vessel

    The circulatory system uses the channel of blood vessels to deliver blood to all parts of the body. This is a result of the left and right sides of the heart working together to allow blood to flow continuously to the lungs and other parts of the body. Oxygen-poor blood enters the right side of the heart through two large veins.

  7. Aquatic respiration - Wikipedia

    en.wikipedia.org/wiki/Aquatic_respiration

    Countercurrent flow occurs when deoxygenated blood moves through the gill in one direction while oxygenated water moves through the gill in the opposite direction. This mechanism maintains the concentration gradient thus increasing the efficiency of the respiration process as well and prevents the oxygen levels from reaching an equilibrium .

  8. Rete mirabile - Wikipedia

    en.wikipedia.org/wiki/Rete_mirabile

    In many fish, a rete mirabile helps fill the swim bladder with oxygen, increasing the fish's buoyancy. The rete mirabile is an essential [ 8 ] part of the system that pumps dissolved oxygen from a low partial pressure ( P O 2 {\displaystyle {P_{\rm {O_{2}}}}} ) of 0.2 atmospheres into a gas filled bladder that is at a pressure of hundreds of ...

  9. Aquaculture - Wikipedia

    en.wikipedia.org/wiki/Aquaculture

    With capture fishery production relatively static since the late 1980s, aquaculture has been responsible for the continuing growth in the supply of fish for human consumption. [24] Global aquaculture production (including aquatic plants) in 2016 was 110.2 million tonnes, with the first-sale value estimated at US$244 billion.