| a tubular connection between the yolk sac and the embryonic gut in the developing embryo. |

| yolk stalk n. A narrow ductlike part that connects the yolk sac to the middle of the digestive tract of an embryo. |
yolk stalk n.
A narrow ductlike part that connects the yolk sac to the middle of the digestive tract of an embryo. Also called omphalomesenteric duct.