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  2. Aquatic respiration - Wikipedia

    en.wikipedia.org/wiki/Aquatic_respiration

    Aquatic respiration is the process whereby an aquatic organism ... a sieve like structure on the upper surface but may also enter via ciliary action in the tube ...

  3. Hypoxia in fish - Wikipedia

    en.wikipedia.org/wiki/Hypoxia_in_fish

    Aerial respiration is the 'gulping' of air at the surface of water to directly extract oxygen from the atmosphere. Aerial respiration evolved in fish that were exposed to more frequent hypoxia; also, species that engage in aerial respiration tend to be more hypoxia tolerant than those which do not air-breath during the hypoxia. [53]

  4. Fish gill - Wikipedia

    en.wikipedia.org/wiki/Fish_gill

    The high surface area is crucial to the gas exchange of aquatic organisms as ... Oxygen has a diffusion rate in air 10,000 times ... Aquatic respiration; Book lung;

  5. Human physiology of underwater diving - Wikipedia

    en.wikipedia.org/wiki/Human_physiology_of...

    Higher inspired oxygen partial pressure at 4 atm (400 kPa) accounted for not more than 25% of the elevation in end tidal carbon dioxide above values found at the same work rate when breathing air just below the surface. [85] [86] [87] [41]

  6. Physiology of underwater diving - Wikipedia

    en.wikipedia.org/wiki/Physiology_of_underwater...

    Extremely low heart rates at the deepest part of the dive should limit nitrogen absorption, conserve blood oxygen, and increase aerobic muscle metabolism based on myoglobin-bound oxygen reserves. [4] Aquatic birds have to overcome the drag created between their bodies and the surrounding water while swimming at the surface or underwater.

  7. Fish physiology - Wikipedia

    en.wikipedia.org/wiki/Fish_physiology

    In both aquatic and terrestrial respiration, ... provides a long surface area, ... at which the organism's physiological processes can act at optimal rates. When fish ...

  8. Gill - Wikipedia

    en.wikipedia.org/wiki/Gill

    A high surface area is crucial to the gas ... Oxygen has a diffusion rate in air 10,000 times ... Aquatic respiration – Process whereby an aquatic ...

  9. Respiration rate - Wikipedia

    en.wikipedia.org/wiki/Respiration_rate

    The respiration rate is a parameter which is used in ecological and agronomical modeling. In theoretical production ecology and aquaculture , it typically refers to respiration per unit of time (usually loss of biomass by respiration per unit of weight), also referred to as relative respiration rate . [ 1 ]