Define Yolk sack. Yolk sack synonyms, Yolk sack pronunciation, Yolk sack translation, English dictionary definition of Yolk sack. the umbilical vesicle. See under Unbilical. See also: Yolk Webster's Revised Unabridged Dictionary, published 1913 by G. & C
例句 释义: 全部 更多例句筛选 1. The yolk sack is about the same size as the original egg, and the unpigmented body of the fry is hard to see. 卵黄袋左右大小相同,原来鸡蛋和去除身上的鱼苗,是难得一见。 bbs.pleco.cn© 2024 Microsoft 隐私声明和 Cookie 法律声明 广告 帮助 反馈...
By week 12 of pregnancy, the embryo develops a placenta, and the placenta takes over for the yolk sac to provide nutrients and oxygen to the growing embryo. After week 20, the yolk sack is not detectable on an ultrasound. Early development of yolk sac, labeled #2....
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Synonyms for yolk stalk in Free Thesaurus. Antonyms for yolk stalk. 36 synonyms for stalk: stem, shoot, branch, stock, trunk, peduncle, pursue, follow, track, hunt, shadow, tail, haunt, creep up on, march, pace, stride, strut. What are synonyms for yolk
Yolk sack (Anat.), the umbilical vesicle. See under Unbilical. Meaning of Yolk cord from wikipedia - Allantois 7 Yolk-sac 8 Chorion Diagram illustrating a later stage in the development of the umbilical cord. 1 Placental villi 2 Yolk-sac 3 Umbilical cord 4 Allantois...- umbilical cord ...
1927. Die ersten Stadien des Blutkreislaufs bei Teleostierembryonen und die Ausbildung der Dottersackzirkulation. Verhandlungen der naturforschenden Gesellschaft Basel 38: 416–426. Shearer, E.M. 1930. Studies on the embryology of circulation in fishes I, II. Am. J. Anat. 46: 393–459...
yolk 权威英汉双解英-汉英-英网络释义 yolk n. 1.蛋黄the round yellow part in the middle of an egg 例句: 1 One ofTWOspiralbands oftissuein aneggthatconnecttheyolkto theliningmembraneateitherendof theshell. 卵黄系带鸡蛋内将蛋黄和蛋壳任一端的内膜连接的两个螺旋的带状组织之一 ...
Synthesis of apolipoproteins, alphafoetoprotein, albumin, and transferrin by the human foetal yolk sack and other foetal organs. J Embryol Exp Morphol 1985;85:191- 206.Shi, W.K.; Hopkins, B.; Thompson, S., et al. Synthesis of apolipoproteins, alphafoetoprotein, albumin, and transf...