Procerus

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.

By TeachMeSeries Ltd (2025)

Fig 1
The nasal muscles of facial expression