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Web Resources
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The Visible Embryo

A detailed pictorial account of normal and abnormal development from conception to birth.

Obstetric Ultrasound: A Comprehensive Guide

Detailed explanation of how ultrasound is used, with ultrasound photos and videos, plus audio of fetal heartbeats.

The March of Dimes

Extensive information on birth defects, effects of drugs and alcohol during pregnancy, prenatal and newborn screening, and how to have a healthy baby.

The National Institute of Child Health and Human Development

Information on several genetic conditions, including Klinefelter and Fragile-X syndromes.








DeHart: Child DevelopmentOnline Learning Center

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