Top Posters
Since Sunday
SlideshowReport

Embryonic Period

Description
When fully developed, the placenta is shaped like a pancake. It is able to protect the fetus from microorganisms as well as its other functions.
Related Images
Add Comment
Explore
Post your homework questions and get free online help from our incredible volunteers
  1272 People Browsing
Your Opinion
Which is the best fuel for late night cramming?
Votes: 145

Previous poll results: Do you believe in global warming?