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Risorius

The risorius muscle is a highly variable muscle of facial expression. It has numerous and very variable origins, and inserts into the angle of the mouth. It receives motor innervation from branches of facial nerve (CN VII). It may be absent or asymmetrical in some people. It pulls the angle of the mouth sidewise, such as during smiling.

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Key facts & relationships

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Actions
Draws back angle of mouth
Artery
Facial artery
FMA
46838
Insertion
Modiolus
Latin
musculus risorius
Nerve
Buccal branch of the facial nerve

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Other animals

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Map overview Semantic statistics

Risorius

Nodes20
Edges19
Triples21
Avg. degree1.9
Density0.1
Components1

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Risorius

Top relations

related to Other animals · 3
Risorius → African, Homininae, It
related to Function · 2
Risorius → It, The
related to Innervation · 2
Risorius → CN VII, The
related to Variation · 2
Risorius → It, The
Actions · 1
Risorius → Draws back angle of mouth
Artery · 1
Risorius → Facial artery
FMA · 1
Risorius → 46838
Insertion · 1
Risorius → Modiolus
Latin · 1
Risorius → musculus risorius
Nerve · 1
Risorius → Buccal branch of the facial nerve

Important terminology Word statistics

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Important terminology

muscle facial mouth angle variable may innervation nerve highly receives asymmetrical modiolus motor cn vii absent people muscles head neck

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
RisoriusActionsDraws back angle of mouth1.00infobox
RisoriusArteryFacial artery1.00infobox
RisoriusFMA468381.00infobox
RisoriusInsertionModiolus1.00infobox
RisoriusLatinmusculus risorius1.00infobox
RisoriusNerveBuccal branch of the facial nerve1.00infobox
RisoriusOriginParotid fascia1.00infobox
RisoriusTA220781.00infobox
RisoriusTA98A04.1.03.0281.00infobox
Risoriusrelated to Additional imagesPosition0.60section
Risoriusrelated to FunctionThe0.60section
Risoriusrelated to FunctionIt0.60section

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    Min side: 3
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