Where does the spleen grow during development?

Where does the spleen grow during development?

• A. Between ventral mesogastrium
• B. Between dorsal mesogastrium
• C. In the left upper quadrant
• D. Along the greater curvature

Answer: (B)

Spleen grows in the dorsal mesogastrium, the part of the foregut’s dorsal mesentery that suspends the stomach to the posterior abdominal wall. From the mesenchymal tissue in that fold, it forms on the left side of the foregut. As the stomach rotates during development, the spleen moves to the left upper quadrant and is held in place by the gastrosplenic and splenorenal ligaments. The ventral mesogastrium forms structures like the liver and the lesser omentum, not the spleen; the left upper quadrant describes its adult position, not where it originates embryologically; and the spleen does not develop along the stomach’s greater curvature.

Spleen grows in the dorsal mesogastrium, the part of the foregut’s dorsal mesentery that suspends the stomach to the posterior abdominal wall. From the mesenchymal tissue in that fold, it forms on the left side of the foregut. As the stomach rotates during development, the spleen moves to the left upper quadrant and is held in place by the gastrosplenic and splenorenal ligaments. The ventral mesogastrium forms structures like the liver and the lesser omentum, not the spleen; the left upper quadrant describes its adult position, not where it originates embryologically; and the spleen does not develop along the stomach’s greater curvature.