Calcium and ATP are cofactors (nonprotein components of enzymes) required for the contraction of muscle cells. ATP supplies the energy, as described above, but what does calcium do? Calcium is ...

Researchers at Imperial College London have discovered that specialist macrophages—a type of white blood cell—play a key role in the control of muscle contraction and locomotion. The discovery ...

Muscle is a soft tissue composed of elongated cells (muscle fibres) that produce force and motion through contraction. Involuntary cardiac and smooth muscles are responsible for contraction of the ...

Nerve cells help contraction of muscles or the relaxation of muscles according to what specific job you need them to do. The type of muscle that helps with digestion is called smooth muscle.

They identify three distinct signalling pathways responsible for this effect, involving direct action on smooth muscle cells, as well as indirect modulation via interneurons or astrocytes. This work ...