Index

Embryogenesis
at a
glance

Germ Layer
Derivatives

Signal transmission
in utero

Amnion
enblargement

Method for
measuring
the length
of fetus

Ultrasound
of human
embryo

Pregnant
uterus,
Week 5

Pregnant
uterus,
Week 8

Transfer
across
the placental
membrane

Chorionic villus

Chorionic
villus
sampling

Delivery

Placenta