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
One
Two
Three
Four
After gastrulation the roof of archenteron is formed by
The seminal vesicle or uterus masculinus in rabbit is found at the junction of
Antifertilizins are contained in
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 |