Summary of Muscle contraction
ATP and muscle contraction
Muscle contraction is the activation of tension-generating sites within muscle fibers. In physiology, muscle contraction does not mean muscle shortening because muscle tension can be produced without changes in muscle length such as holding a heavy book or a dumbbell at the same position. The termination of muscle contraction is followed by muscle relaxation, which is a return of the muscle fibers to their low tension-generating state.
Flashcards on Muscle contraction
During muscle contraction in cardiac myocytes, the release of Ca2+ from the is induced by Ca2+ influx into the cell through voltage-gated calcium channels on the sarcolemma.