Two silastic catheters for injecting ho and taking blood samples were put respectively in a vena jugularis externa and in a jejunal artery which perfused a 10 ~ 15 cm intestinal segment.

• 在颈外静脉和支配10－15cm肠段的空肠动脉内分别放置一硅胶管以备灌流药物和取血样品用。 本研究观察了静脉和动脉注射药物对小肠MMC的影响及MMC不同时相血浆5-羟色胺（5－HT）和胃动素的浓度变化。