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.




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