First trimester babies aren’t blobs of tissue — they’re amazingly complex
First trimester babies aren’t blobs of tissue — they’re amazingly complex
Early in the first trimester – at two weeks after fertilization – the baby’s brain is the first organ to appear, and the beginnings of the heart are seen.
The Endowment for Human Development – Improving lifelong health, one pregnancy at a time
Explore pregnancy and prenatal development with EHD’s free, online educational resources featuring direct videography and 4D ultrasound of the living embryo and fetus. Learn how humans develop from a single cell into a 100-trillion cell adult. Educators can access extensive, password protected curricular content.