爪鲵消化系统的解剖学和组织学初步研究

本文报道了爪鲵消化系统的形态学和组织学结构特点。爪鲵口腔底部具有肌肉质的舌,食管很短,胃是呈纺锤形的长囊,胃壁较厚,粘膜厚,胃腺发达。消化管肌层皆为平滑肌,环肌明显多于纵肌。肝脏较大,分左、中、右三叶;有胆囊;胰腺长带状,胰管与胆管汇合后与小肠最前部的十二指肠相连。

Preliminary Studies on Anatomy and Histology of Digestive System of Onychodactylus fischeri (Caudata:Hynobiidae)

This paper reports the anatomical and histological characters of digestive system of Onychodatylus fischeri. There is a muscle tongue at the bottom of the mouth cavity. The esophagus is very short. The stomach is a long bag in spindle shape; its wall is relatively thick and its mucous membrane is thick, too; the gastric gland is developed. The muscular layer of digestive tube constructed by smooth muscle with circular fibers more abundant than longitudinal ones. The liver is bigger and divided to left, medial and right lobules, there is a gall bladder; the pancreas is long ribbon like, after connecting of bile duct and the pancreatic tubule, then entered to the duodenum, the most anterior section of the small intestine.