Cloudflare fetched the original article and streamed it through HTMLRewriter to apply an entirely new visual system without rebuilding the source page.
This article is within the scope of WikiProject Anatomy, a collaborative effort to improve the coverage of Anatomy on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.AnatomyWikipedia:WikiProject AnatomyTemplate:WikiProject AnatomyAnatomy
This article is part of WikiProject Animal anatomy, an attempt to organise a detailed guide to all topics related to animal anatomy apart from human anatomy. To participate, you can edit the attached article, or contribute further at WikiProject Animal anatomy. This project is an offshoot of WikiProject AnimalsAnimal anatomyWikipedia:WikiProject Animal anatomyTemplate:WikiProject Animal anatomyAnimal anatomy
This article is within the scope of WikiProject Women's Health, a collaborative effort to improve the coverage of women's health on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Women's HealthWikipedia:WikiProject Women's HealthTemplate:WikiProject Women's Healthwomen's health
This page has archives.Topics inactive for 90 days are automatically archived 1 or more at a time by Lowercase sigmabot IIIif there are more than 4.
The content of Placental microbiome was merged into Placenta. The former page's history now serves to provide attribution for that content in the latter page, and it must not be deleted as long as the latter page exists. For the discussion at that location, see its talk page.
Latest comment: 10 months ago1 comment1 person in discussion
After the fertilized egg travels down the fallopian tube to the uterus, around 6-12 days after fertilization, it undergoes a process called implantation. The embryo's attachment to the uterine lining is known as the endometrium. Once the blastocyst contacts the endometrium, some of its outer layer cells, known as the trophoblast cells, proliferate. Then they lose their cell membranes, merge, and act as a single structure called syncytiotrophoblast. This multi-nucleate cytoplasmic mass aggressively burrows and digs its way into the endometrium and invades the uterine wall. It also starts to secrete a hormone called HCG. Hcg is a pregnancy hormone that is crucial in maintaining the corpus luteum. The corpus luteum produces progesterone and stops the menstrual cycle. hCG helps sustain the corpus luteum until the placenta takes over hormone production. hCG is often used as a marker for pregnancy detection. Pregnancy tests detect the presence of hCG in urine or blood to confirm pregnancy. hCG ALSO helps establish immune tolerance in the mother's body and modulates the immune response to protect the fetus from being recognized as foreign tissue. Elevated levels of hCG during early pregnancy are associated with morning sickness, which includes symptoms such as nausea and vomiting.
level-4 vital article is rated C-class on Wikipedia's content assessment scale.
