https://facileessays.com/wp-content/uploads/2020/08/logoFE.png00Lucyhttps://facileessays.com/wp-content/uploads/2020/08/logoFE.pngLucy2022-09-30 16:31:482022-09-30 16:31:48What are contractions that repel food down the gastrointestinal tract known as?