Force of muscle contraction

This chapter presents the following content: Gross anatomy of a skeletal muscle, microscopic anatomy of a skeletal muscle fiber, sliding filament model of contraction, physiology of skeletal muscle fibers, contraction of a skeletal muscle, muscle metabolism, force of muscle contraction, velocity and duration of contraction, adaptations to exercise.

42p tangtuy07 02-04-2016 54 3   Download

The main contents of this chapter include all of the following: Force of muscle contraction, avelocity and duration of contraction, muscle fiber type, effects of exercise, effects of resistance exercise, the overload principle, smooth muscle, peristalsis, microscopic structure, innervation of smooth muscle,...and other contents.

47p tangtuy07 02-04-2016 40 4   Download

Reactive oxygen species (ROS) were shown to mediate aberrant contractility in hypertension, yet the physiological roles of ROS in vascular smooth muscle contraction have remained elusive. This study aimed to examine whether ROS regulate a1-adrenoceptor-activated contraction by altering myosin phosphatase activities. Methods: Using endothelium-denuded rat tail artery (RTA) strips, effects of anti-oxidants on isometric force, ROS production, phosphorylation of the 20-kDa myosin light chain (MLC20), and myosin phosphatase stimulated by a1-adrenoceptor agonist phenylephrine were examined.

10p toshiba23 18-11-2011 50 2   Download