Identify $X$ from figure :
Cavity of uterus
Placental villi
Yolk sac
Umbillical cord with its vessels
The persistence of corpus luteum during pregnancy is due to a hormone known as
Which of the following hormones is not a secretory product of human placenta?
Match the columns
Column $I$ | Column $II$ |
$(a)$ Third week | $(1)$ Development of pre umbilical code |
$(b)$ Third month | $(2)$ Body develops but head remains big |
$(c)$ Fourth week | $(3)$ Embryonic slit widens |
$(d)$ Fourth month | $(4)$ Muscles activate |
Choose incorrect pair :
Placenta is the region, where