Origin: From fascia over the lower of thenasal bone

Insertion: Skin of the lower part of the forehead between the eyebrows

Nerve: Temporal and lower zygomatic branch of the facial nerve, (a buccal branch has also been described)

Action: Draws down the medial angle of the eyebrow giving expressions of frowning

The Procerus (Pyramidalis nasi) is a small pyramidal slip arising by tendinous fibers from the fascia covering the lower part of the nasal bone and upper part of the lateral nasal cartilage; it is inserted into the skin over the lower part of the forehead between the two eyebrows, its fibers decussating with those of the Frontalis.

This definition incorporates text from the wikipedia website - Wikipedia: The free encyclopedia. (2004, July 22). FL: Wikimedia Foundation, Inc. Retrieved August 10, 2004, from




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