In the rat, its effects on the myometrium are of three types: (1) Increase in both tonus and amplitude, (2) increase in amplitude only, (3) increase in tonus.

• 2.；在大白鼠子宫肌条；动情期的标本对马鞭草最为敏感；加入马鞭草后常常引起紧张性和收缩振幅同时增加;