Image Gallery
Vitelline Vessels and Yolk Sac
![Vitelline Vessels and Yolk Sac [Click for next image]](/images/prenatal_numbered_655/vitelline-vessels-and-yolk-sac.jpg "Click for next image")
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Note:The yolk sac is not enclosed within the amnion.Label Key:1. vitelline vessels within yolk stalk 2. yolk sac | ||
| All ages referenced to fertilization, not last menstrual period. |
The Lower Embryo
Yolk Sac and Vitelline Vessels
Vitelline Vessels and Yolk Sac
The Lower Limbs and Back
Central Nervous System
Brain and Spinal Cord
