Placental Septa and Surfaces Anatomy
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Questions and Answers

What is the surface of the placenta that faces the fetus like?

Smooth, shiny, and glistening

How many cotyledons does the maternal surface of the placenta typically divide into?

15-25

What type of cells covers the surface of the septa in the placenta?

Syncytial cells

What is the term for the abnormal shape of the placenta where it consists of two equal lobes connected by placental tissue?

<p>Placenta Bilobated</p> Signup and view all the answers

What is the function of the placenta that involves producing enzymes?

<p>Production of enzymes</p> Signup and view all the answers

What is the term for the placenta's ability to act as a barrier?

<p>Barrier function</p> Signup and view all the answers

What is placenta circumvallate characterized by?

<p>A whitish ring composed of decidua seen around the placenta from its foetal surface.</p> Signup and view all the answers

What is placenta fenestrate?

<p>The placenta has an abnormal opening.</p> Signup and view all the answers

What is placenta membranous?

<p>The placenta consists of membranous placental tissue.</p> Signup and view all the answers

What is the characteristic of placenta previa?

<p>The placenta is partly or totally attached to the lower uterine segment.</p> Signup and view all the answers

What is velamentous placenta?

<p>When the umbilical blood vessels are attached to amnion and ramify there before reaching the placenta.</p> Signup and view all the answers

What is placenta accreta?

<p>When chorionic villi penetrate deeply into the uterine wall to reach the myometrium.</p> Signup and view all the answers

What is the function of cytotrophoblast proliferation through Syncytiotrophoblast?

<p>To reach the maternal endometrium</p> Signup and view all the answers

What is the placental barrier composed of early in pregnancy?

<p>Syncytiotrophoblast, Cytotrophoblasts, Primary mesoderm, and Endothelial lining of fetal blood vessels</p> Signup and view all the answers

What is the purpose of the placental barrier?

<p>To prevent mixing between maternal and fetal blood</p> Signup and view all the answers

What is the function of the decidua during the fourth and fifth months of pregnancy?

<p>To form decidual septa that project into intervillous spaces</p> Signup and view all the answers

What is the role of the cytotrophoblast shell?

<p>To form a complete sheet of cytotrophoblastic cells between decidua basalis and intervillous spaces</p> Signup and view all the answers

What is the function of chorionic villi?

<p>To extend from the chorionic plate to decidua basalis and float in maternal blood in intervillous space</p> Signup and view all the answers

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