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单词 notochord
释义

notochord /'nəʊtə(ʊ)kɔːd//'notə,kɔrd/

英汉-汉英词典
n. 脊索
词组 | 习惯用语
您要查找的是不是:
  • chordate adj. 脊索动物的;具有脊索的 n. 脊索动物
  • antichrist n. 基督的敌人,反对基督者
  • chordata n. [动]脊索动物
notochord n. [胚] 脊索

网络短语:
notochord d 脊索
notochord cells 脊索细胞
notochord morphogenesis 脊索器官
presumptive notochord 预定脊索
notochord length 脊索长度
notochord sheath 脊索鞘
split notochord syndrome 脊索裂隙综合征
degeneration of notochord 脊索退化
sheath of notochord 脊索鞘
英语例句库
  1. primitive marine animal having a saclike unsegmented body and a urochord (a notochord) conspicuous in the larva.
    有囊状不分段形状身体的原始海洋动物,幼虫阶段有明显的脊索。

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原声例句
PBS地球-动物趣闻

Forming a notochord like those still found in some of today's jawless fish.

形成脊索,就像今天仍然在一些无颌鱼中发现的脊索一样。

Awesome Nature

Perhaps the chordate crowd, with their notochords, segmented muscles and big bony skeletons.

或许是脊索动物,有脊索,分节肌肉和干瘪大骨架。

PBS地球-动物趣闻

And the rod down its back was a notochord, an early precursor of the vertebral column seen in vertebrates.

它背上的杆是脊索,是脊椎动物脊柱的早期前身。

PBS地球-动物趣闻

For one thing, the white lines found on some of those fossils go past the eyestalks where true notochord would end.

一方面,在其中一些化石上发现的白线越过眼柄,而真正的脊索应该在眼柄处结束。

中文百科

脊索

剖开非洲肺鱼。图中notochord指脊索,lung指肺,liver指肝。脊索打横撑住全身。
Desarrollo notocordal de un embrión humano
Secreción de Sonic hedgehog por la notocorda durante la diferenciación ventral del tubo neural.

脊索(英语:notochord),是条不仅长而韧的而且在背部中起支持体轴作用的棒状结构。脊索位于消化道背面和背神经管腹面之间,来源于脊索动物的胚胎的原肠背壁。 有的品种,例如文昌鱼,圆口类。终生都靠脊索支撑身体。

英语百科

Notochord 脊索

A dissected spotted African lungfish showing the notochord

In animal anatomy, the notochord is a flexible rod made out of a material similar to cartilage. If a species has a notochord, it is, by definition, a chordate. The notochord lies along the anteroposterior ("head to tail") axis, is usually closer to the dorsal than the ventral surface of the animal, and is composed of cells derived from the mesoderm. The notochord has been observed to have many functions including developmental functions. The most commonly cited functions are as a site of muscle attachment, vertebral precursor, and as a midline tissue that provides signals to the surrounding tissue during development.

近义、反义、联想词
近义词
n.
spinal column, vertebral column, spine, backbone, back, rachis

联想词
vertebrate脊椎动物;dorsal背的,背侧的;epithelium上皮;embryonic胚芽的;embryo胚胎;bony骨的;ventral腹部的;larval幼虫状态的;cartilage软骨;vertebrae椎骨;embryos晶胚;
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更新时间:2025/6/20 5:22:40