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  • What is the type of placenta found in human beings during the initial stage of pregnancy, specifically before the completion of the first trimester?  <str

What is the type of placenta found in human beings during the initial stage of pregnancy, specifically before the completion of the first trimester?

 

Option: 1

Haemochorial - Diffuse


Option: 2

Haemochorial - Metadiscoidal,


Option: 3

Epithelio-chorial - Diffuse


Option: 4

Haemo-endothelial - Zonary


Answers (1)

best_answer

In human pregnancy, the placenta is formed by the fusion of the chorion (embryonic tissue) and the uterine wall. The type of placenta is classified based on the arrangement and interaction of the maternal and fetal tissues.

During the initial stage of pregnancy, before the completion of the first trimester, the human placenta is characterized by an epithelio-chorial type of attachment. This means that there are several layers of epithelial tissue from both the fetal chorion and the maternal uterine lining that are in direct contact with each other.

The term "diffuse" refers to the distribution of chorionic villi (finger-like projections from the chorion) throughout the entire surface of the placenta, providing a large area for nutrient exchange between the maternal and fetal bloodstreams. Therefore, the correct answer is option 3.

 

Posted by

HARSH KANKARIA

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