Study of human pyramidalis muscle in Indian subjects.

The pyramidalis muscle has been studied in 31 human male cadavers of subjects from Uttar Pradesh (India). The measurements of the length and the breadth have been recorded. The asymmetry in size of the muscles, in the same individual, was found to be significant (p less than 0.05). In view of the available literature of this muscle a speculation could be ascertained regarding its regressive nature in the evolutionary history. Therefore electromyographic studies of this muscle are required to establish its present status in reference to functional utility of this muscle with the anatomy of the linea alba.