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词汇 furcula
释义

Definition of furcula in English:

furcula

nounPlural furculae ˈfəːkjʊləˈfərkyələ
Zoology
  • 1The wishbone of a bird.

    鸟胸的叉骨

    Example sentencesExamples
    • Among other features, birds have a structure that they share with dromaeosaurs: a fused clavicle called the furcula, which serves as a brace during the flight stroke.
    • Archaeopteryx was a true bird, because it had a birdlike skull, perching foot, fully-formed flight feathers, a modern-looking elliptical wing, a furcula and avian lung design.
    • Such analyses have shown that some features considered to be typically avian, such as the furcula, first appeared in carnivorous dinosaurs.
    • In the pectoral girdle, fused clavicles, or a furcula, are now known in many theropods.
    • However, its feathers, wings, furcula and reduced fingers are all characteristics of modern birds.
    • The furcula, a fused clavicle, serves as a brace during the flight stroke; it's visible in the pictures above as a large Y-shaped bone ahead of the sternum.
    • As the neotheropods emerged as a separate group, they shared an important ‘birdlike’ trait - the furcula, often (in birds) called the wishbone.
    • I would like to see if the furcula, or wishbone, is present.
    • But clavicles are now known from a variety of nonavian dinosaurs, and a fused furcula is present in several nonavian theropods, including allosauroids and tyrannosaurids.
    • Well, it is actually a wishbone, the furcula is the wishbone and it is made up of the clavicles fused together in the middle.
  • 2The forked appendage at the end of the abdomen in a springtail, by which the insect jumps.

    跳虫的弹器

Derivatives

  • furcular

  • adjective
    Zoology
    • It is produced by the bird inflating its furcular air sac; the calling bird visibly deflates as the vocalization progresses.
      Example sentencesExamples
      • The photo below was taken in attempts to show the powder down feathers which outline the furcular hollow and are unique to herons and bitterns (the yellow feathers near the bottom of the photo that form a ‘V’).
      • To obtain each fat sample, birds were anesthetized by intramuscular injection with ketamine-rompun and a 2 mm incision was made in the skin overlying the furcular cavity.
      • Wing chord length, weight, and a furcular fat score were also determined.
      • Furcular fat is known to correlate positively with total body fat composition.
      • The furcular hollow is more than full; that is, the fat is bulging slightly above the furculum.
      • We detected no differences in the composition of fatty acids in furcular fat, subcutaneous fat, and intraperitoneal fat.
      • This fat is laid down primarily in the furcular region as illustrated at right, but also forms at other locations of the body - including along the flanks where the legs attach to the body.

Origin

Mid 19th century: from Latin, diminutive of furca 'fork'.

Definition of furcula in US English:

furcula

nounˈfərkyələ
Zoology
  • 1The wishbone of a bird.

    鸟胸的叉骨

    Example sentencesExamples
    • Archaeopteryx was a true bird, because it had a birdlike skull, perching foot, fully-formed flight feathers, a modern-looking elliptical wing, a furcula and avian lung design.
    • The furcula, a fused clavicle, serves as a brace during the flight stroke; it's visible in the pictures above as a large Y-shaped bone ahead of the sternum.
    • Among other features, birds have a structure that they share with dromaeosaurs: a fused clavicle called the furcula, which serves as a brace during the flight stroke.
    • As the neotheropods emerged as a separate group, they shared an important ‘birdlike’ trait - the furcula, often (in birds) called the wishbone.
    • Well, it is actually a wishbone, the furcula is the wishbone and it is made up of the clavicles fused together in the middle.
    • However, its feathers, wings, furcula and reduced fingers are all characteristics of modern birds.
    • But clavicles are now known from a variety of nonavian dinosaurs, and a fused furcula is present in several nonavian theropods, including allosauroids and tyrannosaurids.
    • Such analyses have shown that some features considered to be typically avian, such as the furcula, first appeared in carnivorous dinosaurs.
    • I would like to see if the furcula, or wishbone, is present.
    • In the pectoral girdle, fused clavicles, or a furcula, are now known in many theropods.
  • 2The forked appendage at the end of the abdomen in a springtail, by which the insect jumps.

    跳虫的弹器

Origin

Mid 19th century: from Latin, diminutive of furca ‘fork’.

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