Procerus

The procerus (Latin: musculus procerus, musculus pyramidalis nasi) is a triangular-shaped muscle of facial expression located in the glabellar area between the dorsum of the nose and the forehead. It is classified as the nasal facial muscle.

Procerus muscle, Procerus, Nasal muscles, Facial muscles, Muscles of facial expression, Head muscles
Procerus by Anatomy Next
Procerus
OriginMidline of the nasal bone, upper part of the lateral nasal cartilage
Insertion Skin of the lower aspect of the forehead, fibers of frontal belly of the occipitofrontalis muscle 
ActionDepresses the medial eyebrow angle, produces a transverse fold across the glabella
 Innervation Buccal branch of the facial nerve
Blood supplyAngular and lateral nasal branches of the facial artery

 

Origin

The procerus muscle originates from the midline of the nasal bone and the upper part of the lateral nasal cartilage.

 

Insertion

The procerus inserts into the skin of the lower part of the forehead between the eyebrows. It also blends with the fibers of the frontal belly of the occipitofrontalis muscle.

Origin and insertion of procerus, Procerus muscle
Origin and insertion of procerus by Anatomy Next

 

Action

The procerus muscle depresses the medial eyebrow angle. Contractions of this muscle are also responsible for producing a transverse fold across the glabella.

Action of glabellar region muscles, Function of glabellar region muscles, Action of procerus, Function of procerus
Action of glabellar region muscles by Anatomy Next

 

Innervation

The nerve supply to the procerus muscle is provided by the buccal branch of the facial nerve (CN VII).

 

Blood supply

The procerus is supplied mainly by the angular and lateral nasal branches of the facial artery.