What is the difference between placenta and umbilical cord

Difference Between Umbilical Cord and Placenta. Difference Between Similar Terms and Objects. MLA 8 Kumar, Manisha. I get it now.

Name required. Email required. Please note: comment moderation is enabled and may delay your comment. There is no need to resubmit your comment. Following implantation of the egg, the endometrial stromal cell lining is transformed into the decidua decidual reaction. The decidua provides nourishment to the conceptus until the definitive placenta forms. Approximately on day 12 of embryonic development , fetal blood vessels come into contact with maternal blood through openings in maternal vessels, forming a region of fetal-maternal exchange.

Placentation refers to the development of the placenta. The embryonic portion of the placenta is derived from cells of the trophoblast and the maternal portion of the decidua basalis.

At term , the mature placenta weighs approx. It consists of three parts:. Maternal and fetal circulation are separated by the placental barrier. The placental barrier controls the gas and nutrient exchange. Until the fourth month of development, the placental barrier consists of six layers.

After the fourth month, the cytotrophoblast disappears from the villous wall, leaving only the isolated cytotrophoblast cells Langhans cells. After birth , the placenta must be inspected to ensure it has detached completely from the uterine wall. If this does not occur, there is a risk of postpartum hemorrhage. The check is performed by inspecting for the completeness of all placental cotyledons.

On the fetal side, the placenta should be covered by the amnion. The most important placental hormones are HCG , HPL , CRH , estrogen , and progesterone ; other important hormones during pregnancy include thyroid hormones , oxytocin , and prolactin. Other hormones. The placenta is the main site of metabolites and gas exchange between the mother and the fetus.

The journal also grants the right to make small numbers of printed copies for their personal non-commercial use. AJOL and the millions of African and international researchers who rely on our free services are deeply grateful for your contribution. Your donation is guaranteed to directly contribute to Africans sharing their research output with a global readership.

Skip to main content Skip to main navigation menu Skip to site footer. Please use the link above to donate via Paypal. What are the placenta and umbilical cord? How do they grow?

What can a mother do to keep the placenta healthy? What happens after the birth? Joseph Communications uses cookies for personalization, to customize its online advertisements, and for other purposes. Learn more or change your cookie preferences. By continuing to use our service, you agree to our use of cookies.