Procerus muscle
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| Procerus | ||
|---|---|---|
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| Muscles of the head, face, and neck. (Procerus visible at upper left, at top of nose.) | ||
| Latin | musculus procerus, pyramidalis nasi, depressor glabellae | |
| Gray's | subject #107 382 | |
| Origin: | From fascia over the lower of the nasal bone | |
| Insertion: | Into the skin of the lower part of the forehead between the eyebrows | |
| Artery: | ||
| Nerve: | Buccal branch of the facial nerve | |
| Action: | Draws down the medial angle of the eyebrow giving expressions of frowning | |
| Dorlands/Elsevier | m_22/12550241 | |
The Procerus is a small pyramidal slip of muscle deep to the superior orbital nerve, artery and vein.
[edit] Origin and insertion
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 decussating with those of the Frontalis.
[edit] Function
It 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.
[edit] External links
This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
scalp/eyelid: occipitofrontalis (occipitalis, frontalis) - orbicularis oculi - corrugator supercilii - depressor supercilii
extraocular: levator palpebrae superioris - superior tarsal - rectus (superior, inferior, medial, lateral) - oblique (superior, inferior) - intraocular: ciliary - iris dilator - iris sphincter
ear: auriculares - temporoparietalis - stapedius - tensor tympani
nose: procerus - nasalis (dilatator naris) - depressor septi nasi - levator labii superioris alaeque nasi
mouth: levator anguli oris/depressor anguli oris - levator labii superioris/depressor labii inferioris - zygomaticus (major, minor) - mentalis - buccinator - orbicularis oris - risorius
mastication: masseter - temporalis - pterygoid (lateral, medial)
tongue: extrinsic (genioglossus - hyoglossus - chondroglossus - styloglossus) intrinsic (superior longitudinal - inferior longitudinal - transversus - verticalis)
soft palate: levator veli palatini - tensor veli palatini - musculus uvulae - palatoglossus - palatopharyngeus
pharynx: pharyngeal constrictor (inferior, middle, superior) - stylopharyngeus - salpingopharyngeus
larynx: cricothyroid - posterior cricoarytenoid - lateral cricoarytenoid - arytenoid - thyroarytenoid
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