問題詳情
20. The function of the sphincter between the stomach and small intestine is to
(A) retain chyme in the stomach until pepsin digestion is complete.
(B) periodically release chyme into the small intestine in squirts.
(C) release bile into the duodenum when chyme is present.
(D) release pancreatic secretions into the duodenum when chyme is present.
(E) pancreatic secretions transiently into the duodenum when chyme is present.
參考答案
答案：B
難度：計算中-1
書單：沒有書單，新增