Procerus muscle

 The procerus muscle (or pyramidalis nasi) is a small pyramidal slip of muscle deep to the superior orbital nerve, artery and vein. Procerus is Latin, meaning tall or extended.

Procerus muscle
Muscles of the head, face, and neck. (Procerus visible at upper left, at top of nose.)
Details
Origin	From fascia over the lower part of the nasal bone
Insertion	Into the skin of the lower part of the forehead between the eyebrows
Artery	facial artery
Nerve	temporal branch of the facial nerve
Actions	Draws down the medial angle of the eyebrow giving expressions of frowning
Identifiers
Latin	musculus procerus, pyramidalis nasi, depressor glabellae
TA98	A04.1.03.008
TA2	2061
FMA	46769
Anatomical terms of muscle [edit on Wikidata]

StructureEdit

The procerus 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 on either side of the midline, its fibers merging with those of the frontalis.^[1]

FunctionEdit

The procerus helps to pull that part of the skin between the eyebrows downwards, which assists in flaring the nostrils. It can also contribute to an expression of anger.

Procerus is supplied by temporal and lower zygomatic branches from the facial nerve. A supply from its buccal branch has also been described.^[2] Its contraction can produce transverse wrinkles.

This article uses material from the Wikipedia article  Metasyntactic variable, which is released under the  Creative Commons Attribution-ShareAlike 3.0 Unported License.