Question

Considering the following:
1) Endothellium of foetal blood capillaries
2) Connective tissues surrounding foetal blood capillaries
3) Chorionic epithelium
4) Maternal epithelium
5) Connective tissue surrounding maternal blood capillaries
6) Endothelium of maternal blood capilaries
In the case of humans, the placenta comprises which of the above?

• A. 1 , 2, 3, 4, 5 and 6
• B. 1, 2, 3 and 6
• C. 1, 2 and 3
• D. 1, 2, 3 and 5

Answer 1

Answer: (A)

1 , 2, 3, 4, 5 and 6

The human placenta has chorionic epithelial cells. It has maternal endothelial cells of blood capillaries, maternal endometrial epithelium and endothelium of foetal blood capillaries. The foetal connective tissue surrounds the foetal endothelial blood capillaries. The maternal connective tissue surrounds the maternal blood capillaries.

Thus, the correct answer is '1, 2, 3, 4, 5 and 6'.