| 单词 | vegetal pole |
| 释义 | > as lemmasvegetal pole vegetal pole n. Embryology the lower pole of an ovum or a young embryo, which divides more slowly than the upper (animal) pole and in telolecithal ova contains most of the yolk; cf. vegetative pole n. at vegetative adj. and n. Compounds; contrasted with animal pole. ΘΚΠ the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > ovum or ootid > fertilized ovum and parts primitive streak1833 mulberry mass1851 morule1857 morula1875 stirp1875 cytula1876 vegetative pole1876 genoblast1877 mulberry germ1879 parent kernel1879 vegetal pole1881 animal pole1882 amphiaster1885 oosperm1888 segmentation sphere1898 1881 Jrnl. Royal Microsc. Soc. 1 26 The narrower end, pushed towards the vegetal pole, is segmented off like a bud. 1914 W. E. Kellicott Textbk. Gen. Embryol. iii. 92 The vegetal pole is frequently occupied largely by the relatively inert food substance, the materials in general related with the vegetative organs of the developing embryo. 1947 L. B. Arey Developmental Anat. (ed. 5) ii. 31 At the other end of the polar axis is the vegetal pole. Its territory tends to be more sluggish and is concerned with the development of nutrient organs. 2007 Proc. National Acad. Sci. U.S.A. 104 12383/1 The four micromeres are segregated off from the vegetal pole of the egg. < as lemmas |
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