or according to their direction, for example oblique.
When Prof. Smirnov spoke about the structure of the muscles he said that
the muscles were formed by a mass of muscle cells, the muscular fibers were
connected together by connective tissue, the blood vessels and the nerves were in
the muscles.
Great research work was carried out by many scientists to determine the
functions of the muscles. Three basic methods of study were used: experimental
work on animals, the study of the muscles on a living human body and on the
corpse.
Their work helped to establish that the muscles were the active agents of
motion and contraction.
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