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spiracle    
n. 呼吸孔,气孔,喷水孔

呼吸孔,气孔,喷水孔

spiracle
n 1: a breathing orifice

Spiracle \Spir"a*cle\, n.[L. spiraculum, fr. spirare to breathe:
cf. F. spiracule. See {Spirit}.]
1. (Anat.) The nostril, or one of the nostrils, of whales,
porpoises, and allied animals.
[1913 Webster]

2. (Zool.)
(a) One of the external openings communicating with the
air tubes or tracheae of insects, myriapods, and
arachnids. They are variable in number, and are
usually situated on the sides of the thorax and
abdomen, a pair to a segment. These openings are
usually elliptical, and capable of being closed. See
Illust. under {Coleoptera}.
(a) A tubular orifice communicating with the gill cavity
of certain ganoid and all elasmobranch fishes. It is
the modified first gill cleft.
[1913 Webster]

3. Any small aperture or vent for air or other fluid.
[1913 Webster]


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  • Spiracle (vertebrates) - Wikipedia
    The spiracle is a small hole behind each eye that opens to the mouth in some fish In the jawless fish , the first gill opening immediately behind the mouth is essentially similar to the other gill openings
  • Spiracle | Insects, Respiration, Trachea | Britannica
    spiracle, in arthropods, the small external opening of a trachea (respiratory tube) or a book lung (breathing organ with thin folds of membrane resembling book leaves) Spiracles are usually found on certain thoracic and abdominal segments
  • Spiracles Aid in Breathing on Fish, Whales, and Insects - ThoughtCo
    The blowhole of the whale is also sometimes called a spiracle in older texts Whales use their blowholes to take in the air and dispel carbon dioxide when they surface Whales have lungs like other mammals rather than gills like fish
  • What Are The Functions Of The Spiracles? - Sciencing
    What Is a Spiracle? A spiracle is an opening found on the outside of an insect's exoskeleton that is used for breathing There are numerous spiracles on the body of an insect, typically paired and present on the thorax and abdomen
  • Spiracle - (General Biology I) - Vocab, Definition . . . - Fiveable
    A spiracle is an external opening found in various organisms, particularly arthropods, that serves as a passage for air to enter the respiratory system In arthropods, spiracles are typically located on the sides of their bodies and connect to a series of internal tubes called tracheae, which deliver oxygen directly to tissues
  • SPIRACLE Definition Meaning - Merriam-Webster
    — New York Times, 5 Apr 2021 From each spiracle, the blue tubes, called trachea, carry oxygen into the chrysalis — Lisa Raffensperger, Discover Magazine, 15 May 2013 Some modern-day fishes that breathe air have similarly large spiracles
  • What Are Spiracles Used For In Insects? - blog. entomologist. net
    A spiracle or stigma is an opening in the exoskeletons of insects, myriapods, velvet worms, and many arachnids that allows air to enter the trachea In the respiratory system of insects, tracheal tubes primarily deliver oxygen directly into the animals’ tissues
  • Spiracle (arthropods) - Wikipedia
    In various species, control of spiracle opening is done by a wide range of mechanisms, such as elastic closure, and closer muscles surrounding the spiracle or kinking the tube In some the muscle relaxes to open the spiracle, in others to close it
  • Spiracle | definition of spiracle by Medical . . . - Medical Dictionary
    spiracle (in fish) a gill-like cleft that opens behind the eye and through which water is drawn in for gaseous exchange (as it is through the mouth) by the expansion of the pharyngeal cavity It is absent in many bony fish
  • Spiracle - Simple English Wikipedia, the free encyclopedia
    Sharks and rays have a spiracle behind each eye When the shark is not moving, the spiracle helps the shark to breathe





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