Skip Navigation

Movie Theater

Blood Cells and Bone Marrow


 

3 months, 3 weeks

Buy NowFrom The Biology of Prenatal Development.

Script: By 15 weeks, blood-forming stem cells arrive and multiply in the bone marrow. Most blood cell formation will occur here.

All ages referenced to fertilization, not last menstrual period. One month = 4 weeks.
 <  Previous  See Snapshots  Next  > 
Log in to create a playlist
Blood Cells and Bone Marrow
Blood Cells and Bone Marrow
4D Ultrasound
4D Ultrasound
4D Ultrasound
4D Ultrasound
4D Ultrasound
4D Ultrasound
Quickening
Quickening
Movement
Movement
Previous Set Previous Movie Next Set Next Movie
Tell your story. Create your own pregnancy calendar.
Free resources and training for educators


Add a Comment

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

Comment: