Notochord in chinese
Web1.【动物；动物学】脊索。. 2.高级脊椎动物胚胎期的脊索。. adj. -al. "notochord sheath" in Chinese : 脊索鞘. "presumptive notochord" in Chinese : 假定脊索; 预定脊索. "notochondral … WebFeb 2, 2024 · Notochord Definition. An elastic rod, found in all chordate organisms, is known as the notochord. It provides rigid support to the organism. The notochord is replaced by the vertebral column in chordates, called the vertebrates. It is formed by a cartilaginous substance between vertebrae. Lancelets are one of the simplest chordates, which also ...
Notochord in chinese
Did you know?
Webnotochord, flexible rodlike structure of mesodermal cells that is the principal longitudinal structural element of chordates and of the early embryo of vertebrates, in both of which it plays an organizational role in nervous system development. In later vertebrate development, it becomes part of the vertebral column. WebNov 6, 2024 · It is hypothesized that key genes, other than ahr2, are present and associated with the development of a unique type of notochord malformation known as wavy …
WebAs the neural tube begins to develop, the notochord begins to secrete a factor known as Sonic hedgehog or SHH. 當神經管開始建立時, 脊索 便會開始分泌被稱為「音速小子」(Sonic hedgehog)或SHH的遺傳因子。 WebDec 15, 2024 · The chordates are named for the notochord, which is a flexible, rod-shaped structure that is found in the embryonic stage of all chordates and in the adult stage of some chordate species. It is located between the digestive tube and the nerve cord, and provides skeletal support through the length of the body.
The notochord is a long, rodlike structure that develops dorsal to the gut and ventral to the neural tube. The notochord is composed primarily of a core of glycoproteins, encased in a sheath of collagen fibers wound into two opposing helices. The glycoproteins are stored in vacuolated, turgid cells. These cells are covered with caveolae on their cell surface. The angle between these fibers determines whether increased pressure in the core will result in shortening and thickening … WebJan 29, 2024 · In basal chordates such as ascidians, the notochord is a simple and continuous fluid filled tube that acts as a pressurized rod, providing structural support for the embryo and allowing locomotion during larval stages ( …
WebThe notochord, however, is not found in the postnatal stage of vertebrates; at this point, it has been replaced by the vertebral column (that is, the spine). Art Connection. Figure 2. In chordates, four common features appear at some point during development: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail.
WebApr 1, 1976 · ABSTRACT. The notochord of the chick embryo between stages 5 and 23 inclusive has been studied by scanning electron microscopy, supplemented by transmission electron microscopy. Three main phases of development are described, and these have been designated: bilaminar; rod-like, unvacuolated; rod-like and vacuolated. The change in … cy young winner who died recentlyWebPaddlefish as a group are one of the few organisms that retain a notochord past the embryonic stage. Paddlefish have very few bones and their bodies mostly consist of cartilage with the notochord functioning as a soft spine. … cyyt airfieldWebJul 24, 2024 · Notch signaling is one of the evolutionarily conserved signaling pathways in multicellular organisms. It plays an important role in embryonic development. During skeletal development of vertebrates, it regulates bone homeostasis by manipulating both osteoblastogenesis and osteoclastogenesis through different mechanisms. However, due … cyyt atisWeb摘要： 【目的】分析叉头框家族转录因子A2(forkhead box A2,FOXA2)基因第3外显子多态位点在地方猪种中的遗传多样性及其与松辽黑猪繁殖性状的相关性。【方法】采集90头健康经产松辽黑猪母猪耳组织,采用直接测序法检测FOXAFOXA bingham clinic memphisWebno·to·chord. (nō′tə-kôrd′) n. A flexible rodlike structure that is present in the embryos of all chordates and in the adult forms of certain groups, such as the lancelets and hagfishes. … bingham coffee table four handsWebnotochord (n.) "the primitive backbone," 1848, coined in English by English anatomist Sir Richard Owen from chord (n.2) + Greek nōton "back," which is perhaps from the same PIE … cyyt flightawareWebAug 26, 2010 · notochord a flexible, rod-shaped structure that is found in the embryonic stage of all chordates and in the adult stage of some chordates pharyngeal slit an opening in the pharynx post – anal tail a muscular, posterior elongation of the body extending beyond the anus in chordates tetrapod cyy pingyuntech.com