× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
5
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
Home Q & A Board Biology-Related Homework Help General Biology
New Topic  
MapHarr MapHarr
wrote...
Go to Answer
Posts: 500
Rep: 0 0
6 years ago
The chorion and __________ become part of the
  placenta, the organ that allows exchange of
  substances between maternal and fetal
  bloodstreams. Fill in the blank(s) with the appropriate word(s).
 
 

Question 2

During implantation, the __________ buries itself in
  the uterine wall.
Read 37 times
2 Replies
Replies
Answer verified by a subject expert
shallonn__shallonn__
wrote...
#1
Posts: 387
Rep: 1 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

MapHarr Author
wrote...
#2
6 years ago
Brilliant
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1250 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 349
  
 286
  
 332
Your Opinion
Where do you get your textbooks?
Votes: 372
Previous poll results: What's your favorite math subject?