In a simplest type of placenta the foetal blood is separated from the maternal blood by six barriers. How many barriers are lost in human placenta

  • A

    One

  • B

    Two

  • C

    Three

  • D

    Four

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The distal narrow end of the uterus is called......

Match column $I$ with column $II$ and select the correct option using the codes given below.

Column $-I$ Column $-II$
$(A)$ Mons pubis $(i)$ Embryo formation
$(B)$ Antrum $(ii)$ Sperm
$(C)$ Trophectoderm $(iii)$ Female externalgenitalia
$(D)$ Nebenkern $(iv)$ Graafian follicle

  • [NEET 2016]