Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
In the case of humans, the placenta comprises which of the following? (1) Endothelium of maternal blood capillaries (2) Endothelium of foetal blood capillaries (3) Foetal epithelium (4) Connective tissue surrounding foetal blood capillariesA) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: C
Solution :
Human placenta consists of three barriers: (i) Endothelium of foetal blood capillaries (ii) Foetal connective tissue (iii) Foetal epithelium Embryos which develop inside the uterus of the mother often get attached with uterine wall to draw necessary substances from the maternal circulation by means of an organ called placenta,
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