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.
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...
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.
CK-12 Foundation
Ck 12: Life Science: 11.72 Pregnancy
Understand fetal growth during pregnancy in humans.