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单词 water-vascular system
释义

Definition of water-vascular system in English:

water-vascular system

noun
Zoology
  • (in an echinoderm) a network of water vessels in the body, the tube feet being operated by hydraulic pressure within the vessels.

    Example sentencesExamples
    • These tube feet are extended and retracted by hydraulic pressure in the water-vascular system.
    • Like all echinoderms, echinoids are pentaradially symmetrical, have a water-vascular system, and have an internal skeleton made of calcitic ossicles (plates).
    • In starfish, only the left hydrocoel of the larva develops into the adult water-vascular system, while the right hydrocoel disappears.
    • However, Arkarua lacks a stereom or any sign of a water-vascular system.
 
 

Definition of water-vascular system in US English:

water-vascular system

noun
Zoology
  • (in an echinoderm) a network of water vessels in the body, the tube feet being operated by hydraulic pressure within the vessels.

    Example sentencesExamples
    • These tube feet are extended and retracted by hydraulic pressure in the water-vascular system.
    • In starfish, only the left hydrocoel of the larva develops into the adult water-vascular system, while the right hydrocoel disappears.
    • Like all echinoderms, echinoids are pentaradially symmetrical, have a water-vascular system, and have an internal skeleton made of calcitic ossicles (plates).
    • However, Arkarua lacks a stereom or any sign of a water-vascular system.
 
 
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更新时间:2024/12/25 12:44:01