[Comparative morphometric analysis of structural organization of separate heads of the human lateral pterygoid muscle during prenatal period and the first 3 years of the postnatal period].

It was discovered some features in structure and differentiation of different types of the muscular fibers in each of the two heads of the lateral pterygoid muscle during ontogenesis. Taken characteristics gave possibility to think about different functional significance of data of structure in action of the temporomandibular joint of a man.