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platysma

platysma

9.9
A thin flat muscle on each side of the neck that helps move the lower jaw and mouth
  • noun
  • /pləˈtɪzmə/
  • Specialized
translation icon : platisma
  • The platysma muscle helps pull down the corners of the mouth when you frown.
  • platysma muscle

Examples

  • The gland is exposed by incising through the skin, subcutaneous tissue, and platysma muscle.

    Academic text (2004)
  • The submandibular capsule is sutured to the cervical fascia below the digastric muscle, and the cut ends of the platysma muscle are repaired.

    Academic text (2004)
  • The second arch gives rise to an operculum that contains the platysma.

    Academic text (2006)
  • The platysma muscle likely contributed to some degree to the activity recorded at both electrode locations.

    Academic text (2011)
  • The lower part is covered by skin, subcutaneous tissue, platysma muscle, and an investing layer of deep cervical fascia.

    Academic text (2004)
  • The incision is made through the skin, subcutaneous tissue, and platysma muscle to expose the gland (figure 3).

    Academic text (2004)
  • It passes deep into the platysma muscle and lateral to the posterior facial vein and the investing layer of the deep cervical fascia.

    Academic text (2004)
  • During surgery, the doctor carefully cut through the platysma to access the underlying tissue.

  • In a facial expression analysis, the platysma plays a significant role in conveying emotion.

Surface Forms

platysma singular
platysmas plural

Etymology

Platysma comes from the Greek root platys meaning 'broad' or 'flat', like a plate lying over the neck. That's why the name fits: the platysma is a wide, thin muscle that spreads across the front of the neck.