placenta

Question

Human placenta is functionally described as:

RankGuru · Accepted Answer

1. **Placenta Definition**: An organic link between the fetus and mother for physiological exchange.
2. **Classification**: Based on the layers of tissue separating maternal and fetal blood.
3. **Haemochorial Type**: In humans, the maternal tissue (endometrium) is eroded such that the **maternal blood** comes into direct contact with the **fetal chorion** (specifically the trophoblast cells).
4. **Exchange**: This allows for highly efficient nutrient and gas exchange but also creates a risk of exposure to certain pathogens or maternal immune factors.

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placenta

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