| Zhou Yongcan,Zeng Shuixiang,Su Yongquan. 2001. Studies on structure and function of digestive system of Cymatium pileare. Acta Oceanologica Sinica, (2):261－270 |
| Studies on structure and function of digestive system of Cymatium pileare |
| Studies on structure and function of digestive system of Cymatium pileare |
| Received:February 15, 2001 Revised:March 02, 2001 |
| DOI： |
| Key words:Cymatium pileare digestive system structure function |
| 中文关键词: Cymatium pileare digestive system structure function |
| 基金项目: |
| Author Name | Affiliation | | Zhou Yongcan | Fishery Department, Hainan University, Haikou 570228, China
Oceanology Department, Xiamen University, Xiamen 361005, China | | Zeng Shuixiang | Fishery Department, Hainan University, Haikou 570228, China | | Su Yongquan | Oceanology Department, Xiamen University, Xiamen 361005, China |
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| Abstract: |
| The digestive system of Cyrnatium pileare consists of buccal cavity,oesophagus,stomach,intestine,anus,salivary glands and liver.There is a contractible "Argobuccinum" form proboscis in the anterior extremity of its body,and the buccal cavity lies in the anterior part of the proboscis,with a pair of jaws and a piece of radular ribbon.The jaws have many neatly arranged sickleshaped sharpen denticles.Its dentition formula of radula is 2·(7) 1·(5~6) 1 (5~6)·1 (7)·2.In the middle of oesophagus,there is an expanded crop,which has the function of temporary food storage and preliminarily digesting food.The stomach is U-shaped and there are 2 entrances for liver ducts in its ventral side.The intestine is short and can be divided into 2 parts based on the structure of epithelia of their inner walls.The inner wall of foreintestine is stratified columnar epithelium,but the inner wall of hindintestine is pesudostratified columnar epithelium.The salivary gland of C.pileare is toxic gland and the toxin extracted from it plays a great role on its predation.The liver of C.pileare is compound tubuloacinar gland with mitochondrion,rough endoplasmic reticulum,Golgi complex and lysosome in its glandular cells. |
| 中文摘要: |
| The digestive system of Cyrnatium pileare consists of buccal cavity,oesophagus,stomach,intestine,anus,salivary glands and liver.There is a contractible "Argobuccinum" form proboscis in the anterior extremity of its body,and the buccal cavity lies in the anterior part of the proboscis,with a pair of jaws and a piece of radular ribbon.The jaws have many neatly arranged sickleshaped sharpen denticles.Its dentition formula of radula is 2·(7) 1·(5~6) 1 (5~6)·1 (7)·2.In the middle of oesophagus,there is an expanded crop,which has the function of temporary food storage and preliminarily digesting food.The stomach is U-shaped and there are 2 entrances for liver ducts in its ventral side.The intestine is short and can be divided into 2 parts based on the structure of epithelia of their inner walls.The inner wall of foreintestine is stratified columnar epithelium,but the inner wall of hindintestine is pesudostratified columnar epithelium.The salivary gland of C.pileare is toxic gland and the toxin extracted from it plays a great role on its predation.The liver of C.pileare is compound tubuloacinar gland with mitochondrion,rough endoplasmic reticulum,Golgi complex and lysosome in its glandular cells. |
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