Skeletal muscle contraction ends when
Ions move out of cytoplasm
Ach is absorbed frm the nmj
Closure and indrawing of receptors
Decreased calcium outside reticulum
Muscle contraction ends usually when signals from motor neuron stops which repolarises sarcolemma and closes voltage gated calcium channals in sarcoplasmic reticulum. Ref:Guyton and Hall textbook of medical physiology 12th edition,page number:82,83
General physiology