Changes

==Key Stage 3==

===Meaning===

[[File:PregnancyDiagram.png|right|300px|thumb|A [[diagram]] of a [[foetus]] in the [[uterus]] including the [[Umbilical Cord]].]]

The [[amnion]] is a protective sack around the [[offspring]] in the [[uterus]] that is filled with [[fluid]] to protect the [[offspring]].