amnion
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amnion 〔´æｍｎｉ｀ａｎ〕 양막(태아를 싸는)
[百] 양막 (羊膜) amnion
[百d] 양막 [ 洋膜, amnion ]
[生] Amnion (양막) (羊膜)
태아는 양막 안에 있는 양수에서 성장하고 발달하게 되는데, 임신 24주 전 진통 없이 양막이 먼저 파수되면 아기가 살지 못한다.
The fetus grows and develops in the amniotic fluid in the amnion, and if the amnion is leaked before 24 weeks pregnancy, the baby cannot live.
amnion (양막) 파충류, 조류, 포유류의 얇고 든든한 배외막으로서 융모막을 뒤집어 놓은 형
상이며, 태아와 그 주위의 양수를 함유한다. 포유동물에서는 영양막으로부터 생긴다.
placenta : an organ characteristic of true mammals during pregnancy, joining mother and
offspring, providing endocrine secretion and selective exchange of soluble, but not
particulate, blood-borne substances through an apposition of uterine and trophoblastic
vascularized parts. According to species, the area of vascular apposition may be diffuse,
cotyledonary, zonary or discoid; the nature of apposition may be labyrinthine or villous;
the intimacy of apposition may vary according to what layers are lost of those
originally interposed between maternal and fetal blood (maternal endothelium, uterine
connective tissue, uterine epithelium, chorion, extraembryonic mesoderm, and endothelium
of villous capillary). The chorion may be joined by and receive blood vessels from either
the yolk sac or the allantois, and the uterine lining may be largely shed with the
chorion at birth (deciduate) or may separate from the chorion and remain (nondeciduate).
The human placenta is discoid, villous, haemochorial, chorioallantoic, and deciduate. After
birth, it weighs about 600 gm. and is about 16 cm. in diameter and 2 cm. thick,
discounting a principal functional part, the maternal blood in the intervillous space
(which leaks out at birth) into which the chorionic villi dip. The villi are grouped into
adjoining cotyledons making about 20 velvety bumps on the side of the placenta facing
outward to the uterus; the inner side of the placenta facing the fetus is smooth, being
covered with amnion, a thin avascular layer that continues past the edges of the
placenta to line the entire hollow sphere of chorion except where it is reflected to cover
the umbilical cord, which joins fetus and placenta. The cord usually joins the placenta
near the centre but may insert at the edge, on the nonplacental chorion, or on an
accessory placenta.
양막기원의 WISH 세포에서 cAMP, Indomethacin, IL-1β 자극에 따른 Aquaporin들의 발현
The expression of aquaporins in WISH cell drived from human amnion after stimulation with cAMP, indomethacin and IL-1β
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