中华蟾蜍消化道组织学及组织化学研究

采用组织学，组织化学方法研究中华蟾蜍消化道，结果表明：舌有粘膜腺，口咽腔具有皱褶，其粘膜为复层柱状纤毛上皮，口咽腔及食道粘膜中有巨型杯状细胞，食道至胃的粘膜层有丰富的粘液细胞，食道－贲门区具绒毛。这些是中华蟾蜍与摄食有关的重要适应性特征。整个消化道有5类粘液细胞－大型柱状粘液细胞，I型矮柱状粘液细胞，Ⅱ型矮柱状粘液细胞，巨型杯状细胞，普通杯状细胞。

The Histology and Histo-chemistry Studies of the Digestive Tract of the Toad in China, Bufo gargariizans

From 1999 to 2001,by means of histology, histo-chemistry, the tissue and cell in digestive tract of the toad, Bufo gargariizans , have been studied in detail. The digestive tract consists of distinguishable oral pharyngeal cavity, oesophagus, oesophagus cardiac division, stomach (pars cardiaca, corpus ventriculi, pars pylorica), duodenum, small intestine tenue, intestine crassum, intestinum rectum, anal aperture. The mucosa of oral pharyngeal cavity have a lot of fold, numerous large goblet cells exist in the stratified columnar epithelium. The lingular mucosal glands are very flourishing; they are consisted of large columnar mucous cells. There is no taste bud in oral pharyngeal cavity, lingua and oesophagus. From esophagus to stomach, there are numerous mucous cells gathered in tunica propira. The lingular mucosal glands, the large goblet cells of oral pharygngeal cavity and esophagus, the mucosal fold of oral pharygngeal cavity, the numerous mucous cells in tunica propira from esophagus to stomach, the villi of oesophagus cardiac division are important feature to adopt the toad being far away water and hunting for food. Small intestine tenue have flourishing villi. Intestine crassum have n fold and villi, it has a few goblet in mucosal epithelium; but intestinum rectum have folds and villi, numerous goblet in mucosal epithelium. Anal aperture glands exist in anal tunica propira. There are 5 kinds of mucous cells in the digestive tract,they are the large columnar mucous cells, the large goblet cells, the normal goblet cells, I and II type of large short columnar mucous cells (the neck mucous cells and the anal aperture gland cells).