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  2. Spiracle (vertebrates) - Wikipedia

    en.wikipedia.org/wiki/Spiracle_(vertebrates)

    Spiracles (/ ˈ s p ɪr ə k əl, ˈ s p aɪ-/ [1] [2]) are openings on the surface of some animals, which usually lead to respiratory systems. Spiracle of a shark (bighead spurdog, Squalus bucephalus) The spiracle is a small hole behind each eye that opens to the mouth in some fish.

  3. Dräger (company) - Wikipedia

    en.wikipedia.org/wiki/Dräger_(company)

    The semi-closed breathing circuit used the injected gas to circulate the gas in the helmet through a scrubber, providing a very low work of breathing in comparison with most other rebreathers which used the lungs of the diver to circulate gas in the loop. The Modell 1915 bubikopf helmet was designed for use with this system. The rebreather loop ...

  4. Respiratory system - Wikipedia

    en.wikipedia.org/wiki/Respiratory_system

    The respiratory system (also respiratory apparatus, ventilatory system) is a biological system consisting of specific organs and structures used for gas exchange in animals and plants. The anatomy and physiology that make this happen varies greatly, depending on the size of the organism, the environment in which it lives and its evolutionary ...

  5. Shark anatomy - Wikipedia

    en.wikipedia.org/wiki/Shark_anatomy

    The shark kidney excretes urea that is needed for the shark to have in its system so the shark does not become dehydrated from living in seawater. [14] Sharks hearts have two chambers. The shark heart's main importance is providing oxygenated blood to the entire body while filtering out the deoxygenated blood. [15]

  6. Dogs are coming down with an unusual respiratory illness in ...

    www.aol.com/news/dogs-coming-down-unusual...

    Symptoms of respiratory illness in dogs include coughing, sneezing, nasal or eye discharge and lethargy. Some cases of the pneunomia progress quickly, making dogs very sick within 24 to 36 hours.

  7. Ginglymostomatidae - Wikipedia

    en.wikipedia.org/wiki/Ginglymostomatidae

    Also present on the lower jaw are two fleshy barbels, chemosensory organs which help the nurse sharks find prey hidden in the sediments. Behind each eye is a very small, circular opening called a spiracle, part of the shark's respiratory system. The serrated teeth are fan-shaped and independent; like other sharks, the teeth are continually ...

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