Regarding placenta
A
Exchange of oxygen & nutrients occurs in tertiary villi
B
HCG is the first hormone released by placenta
C
It is a source of haematopoietic stem cells of the faetus
D
Its villous capillaries are branches of the uterine artery
E
It receives blood supply from uterine artery only
Correct Answer: Exchange of oxygen & nutrients occurs in tertiary villi, HCG is the first hormone released by placenta, It is a source of haematopoietic stem cells of the faetus
