Platysma muscle
Human neck muscle / From Wikipedia, the free encyclopedia
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Platysma is also a plant taxon synonym with Podochilus, an orchid genus.
The platysma muscle is a superficial muscle of the human neck that overlaps the sternocleidomastoid. It covers the anterior surface of the neck superficially. When it contracts, it produces a slight wrinkling of the neck, and a "bowstring" effect on either side of the neck.
Quick Facts Details, Origin ...
Platysma muscle | |
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Details | |
Origin | Subcutaneous tissue of infraclavicular and supraclavicular regions |
Insertion | Base of mandible; skin of cheek and lower lip; angle of mouth; orbicularis oris |
Artery | Branches of the submental artery and suprascapular artery |
Nerve | Cervical branch of the facial nerve |
Actions | Draws the corners of the mouth inferiorly and widens it (as in expressions of sadness and fright). Also draws the skin of the neck superiorly when teeth are clenched |
Antagonist | Masseter muscle, temporalis muscle |
Identifiers | |
Latin | platysma |
TA98 | A04.2.01.001 |
TA2 | 2147 |
FMA | 45738 |
Anatomical terms of muscle |
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