Many Motor Units
many motor units are stimulated
To accomplish a strong contraction that is stimulated at a rapid rate, the muscle fibers need sufficient ATP for energy production, calcium ions for muscle contraction, and acetylcholine for nerve stimulation. Additionally, a well-coordinated activation of motor units is necessary to achieve a strong and rapid contraction.
rapid rate
few motor units :)
What stimulated the rapid discovery
Skeletal muscle twitch is a single, brief contraction and relaxation cycle, whereas a tetanic contraction involves sustained, rapid repeated contractions without relaxation in between. Tetanic contractions occur when the muscle is stimulated at a high frequency, leading to a fused contraction.
Skeletal or voluntary muscle is capable of rapid contraction and is responsible for skeletal movement.
Sumation of contraction
few motor units
Hyperreflexia (severe rapid tonic contraction of body).
Contraction Band Necrosis
Ventricular fibrillation is a rapid, irregular and uncoordinated contraction of the cardiac muscles.