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1.Chorion
- surrounds the embryo
- has fingerlike projections that attach embryo to the uterus
2.Amnion
- contains amniotic fluid
-fluid surrounds embryo
- protects embryo from mechanical injury by acting as shock absorbers
- fluid also protects embryo from dehydration
- distributes pressure equally over embryo
3.Yolk sac
- surround the yolk
- produces blood cells for embryo until its own liver is able to perform the task
4.Allantois
- present only for a short time
- removes and store waste material
- it eventually becomes the umbilical cord
ericmunguti answered the question on October 8, 2018 at 04:09
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