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Levator labii superioris alaeque nasi muscle

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Last Updated: 21 November 2020

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General | Latest Info

Levator labii superioris alaeque nasi muscle

Details
ActionsDilates the nostril ; elevates the upper lip and wing of the nose
InsertionNostril and upper lip
NerveBuccal branch of facial nerve
OriginNasal bone
Identifiers
FMA46802
LatinMusculus levator labii superioris alaequae nasi
TA22082
TA98A04.1.03.032

Levator labii superioris alaeque nasi is a muscle whose primary purpose is to dilate nostrils and elevate the upper lip. This action enables snarl facial expression, made famous by Elvis Presley and earning it nickname Elvis Muscle. Its nerves come from the buccal branch of facial nerve and this muscle originates from the superior frontal process of the maxilla. It then runs down vertically and divides and inserts in both skin on the lateral side of the nostril and upper lip. In Latin, levator labii superioris alaeque nasi means lifter of upper lip and of wing of nose. This is the longest name given to any muscle in the human body. To remember long name of this muscle, medical professionals adopted the mnemonic Little Ladies Snore All Night. They often also shorten the name to alaeque nasi so that it does not get confused with levator labii superioris Muscle, which lie more lateral.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Levator labii superioris muscle

Key facts about the levator labii superioris muscle

OriginZygomatic process of maxilla, maxillary process of zygomatic bone
InsertionBlends with muscles of upper lip
ActionElevates upper lip, exposes maxillary teeth
InnervationZygomatic and buccal branches of facial nerve (CN VII)
Blood supplyFacial artery, infraorbital branch of maxillary artery

Levator labii superioris is short, paired triangular muscle of the face. It belongs to the buccolabial group of muscles of facial expression. This is a broad group of muscles, that besides levator labii superioris also contain levator labii superioris alaeque nasi, zygomaticus major, zygomaticus minor, levator anguli oris, risorius, depressor labii inferioris, depressor anguli oris, mentalis, orbicularis oris, incisivus superior and inferior, and buccinator muscles. Buccolabial muscles work in synergy to control shape, posture and movements of lips. Levator labii superioris contributes to that by elevating the upper lip and thus exposing maxillary teeth. By performing this action, muscle helps to produce various facial expressions, such as smiling or disdain. This article will discuss the anatomy and function of levator labii superioris muscle.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Surgical Considerations

Acute nasolabial angle and prominent nasolabial fold are two features that are often associated in aging face. A new technique is presented that simultaneously addresses both of these features. Levator alae muscle resection, performed through subciliary incision, improves acute nasolabial angle without concomitant rhinoplasty. At the same time, levator alae muscle resection soften medial nasolabial fold. Partial levator labii superioris muscle resection has occasionally been added to further weaken the middle nasolabial fold. Fresh cadaver dissections were performed to define anatomy and to plan surgical approach. This report describes a series of 10 patients who underwent this procedure, with improvement of acute nasolabial angle and softening of medial nasolabial fold.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Masseteric space (and submasseteric space).

Fascia that forms borders of masticator space is well-define fibrous tissue that surrounds muscles of mastication and contains internal maxillary artery and inferior alveolar nerve. It is bound anteriorly by mandible, posteriorly by parotid, medially by lateral pharyngeal space, and superiorly by temporal space. Infections in this space may be misdiagnosed as parotid abscess or parotitis. 18 most pronounced clinical feature of infection in this area is trismus. Compute tomography scan or magnetic resonance imaging may be an invaluable resource to distinguish abscess from cellulitis and surgical course required for treatment. 19 intraoral surgical access to this space for simple, isolated abscesses is generally adequate to allow for drainage but with extension into adjacent spaces, external approach may be require.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Temporal space.

There are a total of eleven facial muscles that create movement in the mouth and their functions include: lifting up and everting upper lip: levator labii superioris, levator labii superioris alaeque nasi, risorius, levator anguli oris, zygomaticus major and zygomaticus minor muscles. Lowering and everting lower lip: depressor labii inferioris, depressor anguli oris and mentalis Muscles. Closing lips: orbicularis oris muscle. Compacting cheek: buccinator muscle. The bulk of mouth muscles are joined by fibromuscular hub where their fibers are insert. This structure is called modiolus, It is found at angles of the mouth and it is primarily formed by buccinator, orbicularis oris, risorius, depressor anguli oris and zygomaticus major Muscles. Peripheral parts travel medially into labial areas to insert on dermis of lips. In midplane, portion of fibers intermingle with their respective fellow muscles to form philtrum of mouth. The marginal part travels from modiolus on one side to modiolus on the opposite side of the mouth. Some of the fibers curl upon themselves, forming a vermilion border, which is a boundary between lips and adjacent skin. Innervate by buccal and mandibular branches of facial nerve. Supply from superior and inferior labial branches of facial artery, with input from mental and infraorbital branches of maxillary artery and transverse facial branch of superficial temporal artery. Bilateral contraction of whole muscle close mouth. Isolated contraction of particular parts of muscle can produce various movements of the mouth, such as lip pouting, puckering, twisting and others. Through it' contractions, orbicularis oris assists speech and helps create a variety of facial expressions. Wearing a glove, place palpating fingers on the tissue of lips. Ask patient to pucker up lips, and feel contraction of muscle. Once felt, palpate entire muscle as the patient alternately contracts and relaxes. Buccinator muscle shapes the muscular structure of the cheek, filling space between maxilla and mandible. It is comprised of three parts; superior, inferior and posterior. It originates from the external lateral surface of Alveolar process of maxilla, buccinator ridge of mandible, pterygomandibular raphe. All three parts of the buccinator coincide towards the angle of mouth and inserted onto the modiolus and mixes with other muscles of the upper lip. The main supply is from the buccal branch of maxillary artery, with input from branches of facial artery. Buccinator muscle compresses cheek against molar teeth and forestalls cheek from getting bite during mastication. Additionally, it aids in keeping bolus of food center in the oral cavity and limiting it from leaking into the oral vestibule. The Buccinator has a role in playing wind instruments or whistling. Place palpating finger lateral and marginally superior to corner of mouth.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Nasolabial Folds

Nasolabial Fold is an excellent area for BoNT-injections in properly selected patients who have been instructed what to expect. 27 28 levator labii superioris alaeque nasi is muscle primarily responsible for medial Nasolabial Fold and final 3-4 mm of central Upper lip elevation. 27 Weakening this muscle smooths medial Nasolabial Fold and changes the smile pattern of patient. Three major smiling patterns were described by Rubin. 21 most common or Mona Lisa smile pattern is dominated by zygomaticus muscle, which elevates oral commissures to the highest point of smile. The Canine smile is caused by dominant levator labii superioris, and the highest part of the smile is the central upper lip. This pattern occurs in 35 % of the population, and they are potential candidates for this procedure. Since injecting this muscle results in a drop of the central upper lip when smiling, it converts canine smilers into Mona Lisa smilers. Injecting patients with Mona Lisa Smile results in an exaggerated Mona Lisa Smile that most patients find unattractive. Patients with gummy smiles are basically extreme canine smile pattern patients. This group benefits most from BoNT-injection of levator labii superioris aleque nasi. Gummy smilers often smile asymmetrically, requiring asymmetric injection. They also tend to have deeper medial Nasolabial folds, which are area of primary improvement with this technique. The resulting drop of upper lip hides gingiva and results in a more pleasing smile. The technique for this injection is relatively straightforward once the patient has been determined to be a suitable candidate. Before injection, patient can be give preview of the proposed change: patient Smile into mirror held at eye level. Pushing upper lip down 3-4 mm with a cotton applicator stick gives the patient a rough approximation of change to expect to smile as well as Nasolabial Fold. During injection, use the index finger of non-injecting hand to firmly press against the inferior portion of nasal bone where it meets the maxilla. Thus, half of the finger is falling into pyriform aperture while the other half lies in the groove between the nasal bone and maxilla. Then ask the patient to smile strongly-levator labii superioris alaeque nasi can usually be felt just lateral to this groove. It is injected once on each side, just above the periosteum. The dosing range for this muscle is about 3. 75-10 U of Xeomin or Botox With most patients requiring 5 U in total. The usual total dose of Dysport is about 15-20 U.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Bunny Lines

So-call bunny lines are formed by flexing upper fibers of nasalis muscle on the lateral nose and contribution from Levator labii superioris alaeque nasi muscles. These lines can be strictly from nasalis muscle or from combination of heavy Procerus pushing down as nasalis bunches, producing characteristic wrinkles. Regardless of causation, this area is easily treated by injecting 2 unit aliquots in circled areas shown in Fig. 9. 44, which are of course different from patient to patient. Some patients may not exhibit nasalis activity until their glabella is treated and then recruit nasalis muscles when attempting to frown as a compensatory mechanism. In the early days of neurotoxins, this was known as BOTOX Sign, but now bunny lines are separate and commonly treated entity. Figs. 9. 45-9. 47 show before and after treatment for bunny lines.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

Sources

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions.

* Please keep in mind that all text is machine-generated, we do not bear any responsibility, and you should always get advice from professionals before taking any actions

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