[Histological Study on Integumentary and Digestive System of Hirudo nipponica].

Objective: The integumentary and digestive system of Hirudo nipponica were studied,in order to protect the precious Chinese herbal medicine.

Methods: The histological study of integumentary and digestive system of Hirudo nipponica by histological methods were carried out by microscopical method.

Results: The body wall of Hirudo nipponica could be divided into five layers, including cuticular layer, epithelial layer, dermis layer, muscle layer and grape-like tissue. The digestive system was composed ofmouth,pharyngeal,esophagus,crop,intestine,rectum and anus.

Conclusion: This study can provide the basic data for the artificial breeding, research in pathology and physiological functions of Hirudo nipponica.