Starting from the pylorus, the segments of the small intestine, in order, are
A)ileum, jejunum, and duodenum
B)jejunum, duodenum, and ileum
C)jejunum, ileum, and duodenum
D)duodenum, jejunum, and ileum
E)duodenum, cecum, and ileum

Question

Quizplus · Accepted Answer

The small intestine has three segments in order: duodenum, jejunum, and ileum. Therefore, only option D has the correct order. Option A has the correct order of the last two segments, but the duodenum comes first, not last. Option B has the correct order of the last segment, but the duodenum comes second, not last. Option C has the correct order of the last two segments, but the jejunum comes first, not last. Option E has the duodenum at the beginning, followed by the cecum, which is part of the large intestine, and then the ileum, which is the last segment of the small intestine.

Starting from the Pylorus, the Segments of the Small Intestine