Select
Image:
A cut through the visceral arches, as in the image on the left, illustrates the pattern of flow as blood enters the caudal aspect of the heart tube and leaves in the region of the forming visceral arch. 
                     Species: Mouse 
                     Day Gestation: 8 
             Approx. Human Age: 24 days 
                                   View: Lateral & Frontal
 
               Week 4 Development
                                     8 of 42