platysma muscle

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MUSCLE platysma
Alias
ACTION Mandible:
- depression

Lower lip:

- Depression, (pulls down lower lip)

Tenses skin of neck

Origin Superior thorax between cartilage of 2nd rib and acromion of scapula
Insertion Mandible and skin of cheek
Innervation Facial nerve
Nerve Root CN VII
Artery branches of the Submental artery and Suprascapular artery

[1] [2] [3] [4]

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External links

References

  1. Martini, F.H., Nath, J.L., & Bartholomew, E.F. (2015). Fundamentals of Anatomy and Physiology, Tenth Edition, CA: Pearson.
  2. Tortora, G.J. & Derrickson, B. (2017), Principles of ANATOMY & PHYSIOLOGY, 15th Edition. NJ: Wiley.
  3. http://www.anatomyexpert.com/
  4. Wikipedia http://www.wikipedia.org/