comparative study on the contractile behavior of enervated skeletal muscles of rat and uromastix

ABSTRACT

Studies regarding the effects of disuse on the skeletal muscles of rat and uromastix were made in view of the differences already reported in the contractile characteristics of the normal skeletal muscles of uromastix [Azeem and Shaikh,1987]. The left hemi - dia phragm of white albino rat and the left gastrocnemius muscles of uromastix were chronically denervated for 21 days In rats, the twitch and tetanic tensions of the denervated muscles showed significant decreases. However, other time dependent parameters were found to be increased significantly. In case of uromastix however, the muscles were not found to be affected by chromic denervation. The contractile behaviour of the denervated muscles of these animals are discussed in terms of morphological and mechanical contraction differences