THE problem of the excitation-contraction link in muscle cells has long been one of the chief fields of modern muscle physiology 1–4. Of many reports in this field, one of the most interesting was the ...

The sliding filament model underlies all types of muscle contractions. Here are the three main types: Concentric Contraction: ...

The ability to modify the intracellular concentrations of divalent calcium ions is vital to normal cell functioning. In the cells of the cardiac muscle, calcium ions play a crucial role in coupling ...

The transverse tubules (t-tubules) are invaginations of the cell membrane rich in several ion channels and other proteins devoted to the critical task of excitation-contraction coupling in cardiac ...

The flow of water within a muscle fiber may dictate how quickly muscle can contract, according to a new study. The flow of water within a muscle fiber may dictate how quickly muscle can contract, ...

(CBS News) A chemical found in many antibacterial soaps, deodorants and mouthwashes has been shown in a new study to restrict muscle contractions in mice and fish, leading researchers to ponder what ...

Muscle contraction is the tightening, shortening, or lengthening of muscles when you do some activity. It can happen when you hold or pick up something, or when you stretch or exercise with weights.

The origin is the end of a muscle which is attached to a fixed bone. The insertion is the other end of the muscle that is attached to the bone which moves. Muscular contractions are defined as the ...