Glomerular development in the kidney as an index of fetal maturity
Glomerular development in the kidney as an index of fetal maturity
复制标题
DOI：
10.1016/s0022-3476(43)80226-2
复制
发表时间：
1943-01-01
影响因子：
5.1
通讯作者：
Thierstein, ST
中科院分区：
文献类型：
--
作者：
Potter, EL;Thierstein, ST
出生前所达到的身体发育阶段在不同的哺乳动物物种之间有很大的差异，但在出生前，每个胎儿都必须达到与出生后不久对其的要求相称的发育状态。在出生之前，所有的胎儿都过着受保护的寄生生活，除了它们的组成细胞能够繁殖和分化之外，对它们几乎没有什么要求。解剖学和生理学的发展是如此的一体化，以至于一个的发展总是与另一个的同等发展相联系，人类胎儿通常必须在受孕后约265天内科普宫外生活的紧急情况，或按一般计算，在紧接怀孕前的月经期的第一天后280天。这一时间长短有一些差异，但75%以上的婴儿是在预产期后两周内分娩的。
T HE stage of bodily development which is attained before birth varies greatly among different mammalian species, but before being born each fetus must attain a state of development commensurate with the demands which will be placed upon it ilmnediately after birth. Prior to birth all fetuses lead a protected, parasitic life, and little is required of them except that their constituent cells be able to multiply and differentiate. Anatomic and physiologic development are so integrated that progression of one is invariably associated with equivalent elaboration of the other.The human fetus must ordinarily cope with the exigencies of extrauterine life in approximately 265 days after conception, or, as generally calculated, 280 days after the first day of the menstrual period which immediately preceded pregnancy. There is some variation in this length of time, but over 75 per cent of all infants are delivered within two weeks of the expected date.