fetus
Encyclopaedia Search
Fetus 
. Enclosed within its amniotic sac, and cushioned from sudden movements by amniotic fluid, the fetus receives its oxygen and nutrients via the umbilical cord from the placenta, which is embedded within the inner wall of the womb.', copy:'(Image © Steve Allen/Getty Images)'});)
 the head, an arm, the body, and a foot. Such scans are often taken at around the twelfth week of pregnancy to determine whether any obvious developmental abnormalities have occurred.', copy:'(Image © RM)'});)
Click images to enlarge
Stage in mammalian embryo development after fusion of gametes produces a zygote cell. The human embryo is usually termed a fetus after the eighth week of development, when the limbs and external features of the head are recognizable. The stage ends at birth.
© RM 2009. Helicon Publishing is division of RM.
Advertisement starts
Advertisement ends
Advertisement starts
Advertisement ends
Country Search
Dictionary search
Kyrgyzstan Flag
Health Search
Advertisement starts
Advertisement ends
Page Footer
Access keys
You will need to use different key combinations in order to use access keys depending on your internet browser, find out which on our accessibility page.
- (0) Navigate to Accessibility page.
- (1) Navigate to Home page.
- (2) Navigate to My email.
- (3) Navigate to My Account.
- (4) Navigate to Site Map page.
- (5) Navigate to Contact us page.
- (6) Navigate to Members channel.
- (7) Navigate to Services channel.
- (8) Navigate to News & Info channel.
- (9) Navigate to Entertainment channel.
- ([) Skip down to the Primary navigation block.
- (]) Skip down to the more links within this section block.
- (=) Bypass all navigation and jump to the content.
- (x) Text only version of this page.
