Ryanodine receptors release calcium from the sarcoplasmic reticulum into the cytosol

In muscle, creatine kinase catalyse reaction where creatine is phosphorylated to phosphocreatine.

NO is produced by smooth muscle cells.

During intensive muscle work lactate accumulates in the muscle cells and local pH rises.

Troponin subunit T (TnT) privdes connection between troponin complex and tropomyosin.

Voltage-dependent calcium channels are G protein coupled receptors.

White muscle fibres have a lower amount of myoglobin in comparison to red muscle fibres.

Calmodulin is a calcium-binding protein located in among others in smooth muscle cells.

Adenylate kinase catalyse interchange of AMP to ATP.

In the relaxed state Troponin C inhibits actin-myosin interaction.