Select
Image:

 

 

 

Early in the fourth week of human development the cranial and cervical (neck) regions make up approximately 1/2 of the embryo's length.

 
                     Species: Mouse 
                     Day Gestation: 8 
             Approx. Human Age: 22 days 
                                   View: Dorsolateral 
                 Cell Populations
                                     1 of 41