消化道的动力功能是消化系统最重要的生理功能之一。它包括混合、推进、贮存和屏障。人体要不断从外界摄取食物，食物在口腔进行机械性消化，与唾液混合成合团，下咽后，又与消化液混合，逐步推进，经过一系列复杂的消化作用，吸收其中的营养成分，并将残渣排出体外。胃对食物 Gastrointestinal motility is one of the most important physiological functions of the digestive system. It includes mixing, propulsion, storage and barrier. The human body must continue to ingest food from the outside world. The food is mechanically digested in the mouth and mixed with saliva into a consortium. After swallowing, it is mixed with digestive juice and gradually progressed. After a series of complicated digestion, the nutrients are absorbed therein The residue was excreted. Stomach to food