Written by Max Bidewell

Last updated January 17, 2023 • 4 Revisions

The procerus is a nasal muscle of facial expression. It lies superficial to the nasal bone.

  • Attachments – Originates from the nasal bone and inserts onto the skin of the lower medial forehead.
  • Actions – Pulls the eyebrows downward to produce transverse wrinkles over the nose (associated with frowning)
  • Innervation – Buccal branches of the facial nerve.
  • Blood supply – Facial artery.

Fig 1
The nasal muscles of facial expression

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