Twitch fibers are used in sudden actions as in jumping. Locate the framework of fibrous connective tissue in transverse sections of entire body muscles (e.g., gastrocnemius, biceps brachii, etc.) (Fig. E13). Individual muscle fibers are surrounded by fibrous connective tissue, the endomysium,...
Twitch fibers are used in sudden actions as in jumping. Locate the framework of fibrous connective tissue in transverse sections of entire body muscles (e.g., gastrocnemius, biceps brachii, etc.) (Fig. E13). Individual muscle fibers are surrounded by fibrous connective tissue, the endomysium,...
MusclesWhen myofibrils isolated from the indirect flight muscles of Calliphora were treated under the microscope with freshly-prepared crude suspensions of sarcosomes from the same muscles they elongated by about 4% and then contracted when treatment ceased; several cycles of elongation and contraction...