An enzyme called _______________________ makes the ovum surface more
permeable so that a sperm can penetrate the ovum.
About seven days after an ovum has been fertilized, it becomes imbedded in the
wall of the _____________. This event of pregnancy is called ______________.
____________________________ is the name for the growing and developing
organism from the time of implantation through the end of the eighth week after
The name for the growing and developing being from the beginning of the ninth
week until delivery is __________________________.
The ________________________ connects the fetus and the placenta.
The organ which brings nourishment to the fetus and carries away fetal
excretions is the _________________________.
The period of time between conception (the sperm joins an ovum) and the birth
of a child is termed __________________.
___________________ is another name for childbirth.
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