Other
Endowment for Human Development: The Virtual Human Embryo
Click on any embryo and start exploring one of the 23 stages of development during the 8-week embryonic period.
Other
Temple University Med School: Ventricular System Development (Early)
Upper-level explanation of early human ventricular system development. Provides interactive labeled diagrams and description of weeks 4, 5, and 6 in embryo development.
Exploratorium
Exploratorium: Which Embryo Is Human?
Scientists can use the research they gather from studying embryos of dogs, lizards, fish, and chickens to better understand human embryos. How is this possible? You'll find out with this Exploratorium resource.
McGraw Hill
Glencoe Biology: Human Development Before Birth: Self Check Quiz
This multiple-choice quiz on human fetal development allows students to get hints for each question and check their answers after submitting.
Other
The Visible Embryo
Discover the development of an embryo. Beginning with fertilization and progressing through each stage in the first trimester and continuing every two weeks for the second and third trimesters. This site is meant for medical students and...
University of Michigan
University of Michigan/human Embryonic Stages
Sample images of Carnegie stages of human embryo throught the first trimester.
Other
Story md.com: Conception to Birth
See the amazing process of human conception followed by the development of the embryo through each week of the pregnancy to the birth.
Khan Academy
Khan Academy: Human Embryogenesis
Explains what happens during embryogenesis, the first eight weeks of pregnancy.
CK-12 Foundation
Ck 12: Life Science: 11.72 Pregnancy
Understand fetal growth during pregnancy in humans.
Exploratorium
Exploratorium: Cual Embrion Es Humano?
An exhibit that explains why the embryos of vertebrates look so much alike.