以往对妊娠、分娩时的子宫功能研究集中于子宫体部,宫颈仅被看作是一个被动的器官,对其功能的变化研究较少。从子宫局部观点而言,妊娠的继续及适时的分娩,是子宫体部与颈部相互协调作用的结果。近年来对宫颈作为一个功能器官的认识,是生殖生理的重要进展之一,但其重要性还未被充 Previous studies of uterine function during pregnancy and childbirth focused on the uterine body. The cervix was only considered as a passive organ, and its study on the changes of its function was scarce. From the local point of view of the uterus, the continuation of pregnancy and timely delivery, is the result of the coordination of the uterine body and neck. In recent years, awareness of the cervix as a functional organ is one of the important advances in reproductive physiology, but its importance has not yet been filled