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单词 yolk stalk
释义

Definition of yolk stalk in US English:

yolk stalk

noun
  • A tubular connection between the yolk sac and the digestive tract of a developing embryo.

    Example sentencesExamples
    • The yolk stalk is also called the umbilical duct, vitelline duct, or oomphalomesenteric duct.
    • In viviparous sharks, the yolk stalk that connects the embryo to the yolk grows long in the uterus.
    • The yolk stalk is the narrow connection between the endoderm of the embryo and the yolk sac.
    • During this phase of development, the midgut remains attached to the yolk stalk or vitelline duct.

Definition of yolk stalk in US English:

yolk stalk

noun
  • A tubular connection between the yolk sac and the digestive tract of a developing embryo.

    Example sentencesExamples
    • The yolk stalk is also called the umbilical duct, vitelline duct, or oomphalomesenteric duct.
    • The yolk stalk is the narrow connection between the endoderm of the embryo and the yolk sac.
    • During this phase of development, the midgut remains attached to the yolk stalk or vitelline duct.
    • In viviparous sharks, the yolk stalk that connects the embryo to the yolk grows long in the uterus.
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更新时间:2025/6/19 14:38:50