Thursday, January 27, 2011

Fetal development: 5 weeks pregnant



As pregnancy officially starts two weeks before the sperm hits the egg, this embryo just over three weeks old represents pregnancy at "five weeks." The spinal streak is closing and the somites, representing future muscles, are forming along it.

Labels: , ,

0 Comments:

Post a Comment

Links to this post:

Create a Link

<< Home

Newer Posts Older Posts