[Evolutionary myology as a research method in the morphological evolution of human muscles]

The author presents the evolutionary myology as a complex research method by which the morphological transformation of human muscles could be proved. This process of muscle transformation is elucidated by 3 investigation types: 1. Morphological macroscopic investigation of the variations of certain human muscle. 2. Comparative anatomic investigation of the same muscle. 3. Muscle organogenetic study of human embryos and fetuses. The macroscopic morphological investigation of the variations of any human muscle enables the examination of the variability in its complete versatility and volume if a sufficient number of preparations are investigated. A line of successive muscle variations could be composed from the established variants, arranged one after another. Furthermore, the frequency of each variation could be determined in per cents. The material for comparative-anatomic investigation must be selected according to the contemporary zoology. The variation line of human material can be properly directed due to that examination. Now it is possible to understand which is the initial form, the transitional forms and the final form of the transformation process. Thus the direction of transformation process could be understand. The muscle organogenetic investigation must be carried out on human embryos and fetuses of different ages. In this way muscle and tendion primordium could be observed directly and in the same time the important factors about the primordium maturity and its eventual shifting could be established. The example described refers to the transformation of m. abductor pollicis longus. It reveals how the evolutionary myology can be used to prove the morphological evolution of any muscle.