This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abdomen and pelvis, Subject name: Anatomy
[{'content': 'Valvulae conniventes are seen in \nSelect and explain. \nA. Jejunum, B. Ileum, C. Stomach, D. Colon', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The valvulae conniventes, also known as Kerckring folds or plicae circulares, are the mucosal folds of the small intestine, staing from the second pa of the duodenum, they are large and thick at the jejunum and considerably decrease in size distally in the ileum to disappear entirely in the distal ileal bowel loops. p Ref - radiopedia.org', 'role': 'assistant'}]