Muscle contraction is the activation of tension-generating sites within muscle cells. In physiology, muscle contraction does not necessarily mean muscle...

fiber. Smooth muscle cells control involuntary movements such as the peristalsis contractions in the esophagus and stomach. The Smooth muscle has no myofibrils...

the basic functional, contractile units of the muscle fiber necessary for muscle contraction. Muscles are predominantly powered by the oxidation of fats...

disease called tetanus) is a sustained muscle contraction evoked when the motor nerve that innervates a skeletal muscle emits action potentials at a very high...

multiunit smooth muscle. Smooth muscle differs from skeletal muscle and cardiac muscle in terms of structure, function, regulation of contraction, and excitation-contraction...

The sliding filament theory explains the mechanism of muscle contraction based on muscle proteins that slide past each other to generate movement. According...

sudden involuntary contraction of a muscle, a group of muscles, or a hollow organ, such as the bladder. A spasmodic muscle contraction may be caused by...

to or interference with the different stages of muscle contraction. There are two main causes of muscle fatigue: the limitations of a nerve’s ability to...

muscles, but nonetheless arise through activation of the central nervous system, albeit not engaging cortical structures until after the contraction has...

striated skeletal muscle cells, GLUT4 concentration in the plasma membrane can increase as a result of either exercise or muscle contraction. During exercise...