ANATOMICAL AND FUNCTIONAL STUDIES ON THE DIGESTIVE SYSTEM OF VIVIPARUS UNICOLOR (OLIVIER, 1801) 1- THE OUTER MUSCULATURE OF THE BUCCAL MASS.

Document Type : Research article

Authors

Dept. of Zoology, Faculty of Science, Assiut university, Assiut Egypt

Abstract

The extrinsic muscles and muscular coat of the buccal mass of the Egyptian vivip < /strong>arid snail Viviparus unicolor has been macro- and micronanatomically studied for the first time. Their structure has been correlated with their function and with the mechanism of feeding of the snail. Also, it has been comp < /strong>ared with the corresponding constituen ts of other gastropods.