Procerus

Procerus is a small pyramidal slip of muscle deep to the superior labial branch of the facial artery. It arises 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 blending with those of the Frontalis and Corrugator.

Function

The Procerus muscle pulls the skin between the eyebrows down, which produces horizontal wrinkles over the bridge of the nose. This action is associated with frowning.

Clinical significance

The Procerus muscle can be targeted by botulinum toxin as a treatment for reducing wrinkles and frown lines. This is a common procedure in cosmetic surgery and is often referred to as a 'Botox injection'.

See also

• Facial muscles
• Nasalis muscle
• Depressor septi nasi muscle

References

Procerus Resources
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