PLATYSMA MYOIDES
\plˈatɪsmə mˈa͡ɪɔ͡ɪdz], \plˈatɪsmə mˈaɪɔɪdz], \p_l_ˈa_t_ɪ_s_m_ə m_ˈaɪ_ɔɪ_d_z]\
Definitions of PLATYSMA MYOIDES
- 1898 - Warner's pocket medical dictionary of today.
- 1846 - Medical lexicon: a dictionary of medical science
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By William R. Warner
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A muscle situate superficially on the lateral parts of the neck. It is fiat, broad, and quadrilateral. Its fibres, which are all parallel to each other, pass obliquely upwards, and from without inwards. They arise from the areolar tissue, which covers the anterior and superior part of the chest; pass before the clavicle, and proceed to attach themselves at the interior part of the symphysis menti, at the external oblique line of the jaw, and at the commissure of the lips. The fibres of this last insertion form a distinct fasciculus, called by some anatomists Mus'culus Riso'rius Santori'ni. The platysma myoides depresses the commissure of the lips, and carries it outwards. It contributes, also, to the depression of the lower jaw. When it contracts, it wrinkles the skin of the neck transversely.
By Robley Dunglison
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