The fourth and last region ofthe specialized stomach of ruminants (e.g.the cow). It is lined with normal mucosacontaining gastric pits,producing hydrochlo-ric acid,pepsin,and rennin,and is the truedigestive stomach.反芻動(dòng)物(如牛)特有的最后一個(gè)胃,即第四胃。它有正常的凹形的黏膜......（本文共 248 字）     [閱讀本文] >>