Corpus ID: 5642498

[Studies on the facial muscles in the aged].

  title={[Studies on the facial muscles in the aged].},
  author={J. Rubinstein},
  journal={Journal de biologie buccale},
  volume={5 1},
The dissection of the facial musculature in the elderly made on 2 bodies, confirmed the mode of evolution noted earlier in the Primates. The reduction in the m. platysma myoides was confirmed; this muscle showed only two parts: a rudimentary pars buccalis and a relatively developed pars mentalis. This reduction was accompanied by fundamental transformations since the m. quadratus of the chin appeared at the anterior part of the pars mentalis of the platysma myoides. The derivatives of the deep… Expand