Question

Which of the following structure develops from dorsal mesentery ?

• A. Greater omentum
• B. Lesser omentum
• C. Liver
• D. Diaphragm

Answer 1

The Correct Option is A

The question pertains to the development of anatomical structures from the dorsal mesentery, an embryological structure within the developing gastrointestinal tract. Among the options given, the structure that develops from the dorsal mesentery is the Greater omentum. Here’s a brief explanation of why this is the correct answer:

1. Embryology Context: During embryonic development, the mesenteries are double layers of peritoneum that support the intestines and attach them to the dorsal or ventral body wall.

2. Dorsal Mesentery Derivatives: The dorsal mesentery primarily gives rise to the structures associated with the dorsal aspect of the gastrointestinal tract, including components such as the greater omentum, mesentery of the small intestine, mesocolon, and more.

3. Greater Omentum: Specifically, the greater omentum is a large apron-like fold of visceral peritoneum that hangs down from the stomach and covers much of the intestines. It develops from the dorsal mesogastrium, a subset of the dorsal mesentery during embryogenesis.

4. Other Options:

• Lesser omentum: Develops from the ventral mesentery.
• Liver: Also arises from the ventral mesentery.
• Diaphragm: Develops independently of the peritoneal mesenteries.

In conclusion, the Greater omentum develops from the dorsal mesentery, making it the correct choice among the options provided.