Skip Navigation
The Endowment for Human Development
The Endowment for Human Development
Improving lifelong health one pregnancy at a time.
Donate Now Get Free Videos

Movie Theater

Blood Formation in Liver


6 weeks, 6 days

From The Biology of Prenatal Development.Buy Now

Script: By 6 weeks, blood cell formation is underway in the liver where lymphocytes are now present. This type of white blood cell is a key part of the developing immune system.

The diaphragm, the primary muscle used in breathing, is largely formed by 6 weeks.

All ages referenced to fertilization, not last menstrual period.
See Snapshots   |   Log in to create a playlist
The Rapidly Growing Brain
The Rapidly Growing Brain
Response to Touch
Response to Touch
Blood Formation in Liver
Blood Formation in Liver
Physiologic Herniation
Physiologic Herniation
Nipple Formation
Nipple Formation
Hand Movement
Hand Movement
Buy the Biology of Prenatal Development DVD
Free resources and training for educators


Add a Comment

Your Name: Log In 3rd-party login: Facebook     Google     Yahoo

Comment: