LA. Fihes, H.I. Dessuky
Department of Anatomy and Histology, Faculty of Medicine, Al Arab Medical University, GS.P.L.A.J
Garyounis Medical Journal Vol. 14, No. 1-2. January/July 1991:.61-65
In the biceps brachii muscle of the rat four types of skeletal muscle fibres were identified. Type Ia fibres were oxidative fibres which showed strong acid preincubated ATPase, They represented 24.1 + 1.75% of the fibres. Type lb were oxidative fibres with weak glvcolytic activity. They constituted 4.6 + 1.3% of the total number of fibres. Type II fibres were glycolytic fibres with strong alkaline preincubated ATPase. They represented 42.6 + 5.45% of the total number of fibres. Type lll fibres were glycolytic oxidative fibres or on intermediate type which consituted 28.6 + 2.4% of the total number of fibres in this muscle.
Keywords: Identification of Four Types of Skeletal Muscle Fibres in Adults Rats