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Depressor labii inferioris
Other Terms:
Musculus Depressor labii inferioris,
Muscle abaisseur de la lèvre inférieure
Muscle parts
None
Latin name
Musculus depressor labii inferioris
Latin muscle parts
None
Group
Branchial arch muscle – second arch (Facial muscle)
Etymology
The English for this muscle name is the muscle that presses down the lower lip. Depressor comes from the Latin de meaning “down” and premere meaning “to press.” Labium is the Latin term for “lip.” The word inferior is Latin for “lower.”
Origin
Oblique line of the mandible between the mental foramen and the midline
Insertion
Blends with the orbicularis oris and the skin of the lower lip
Action
The muscle pulls the inferior lip downward and slightly to the lateral side. It also contributes to eversion of the lower lip.
Nerve supply
Facial nerve (Cranial nerve VII)
Blood supply
Inferior labial branch of the facial artery
Latin
Musculus Depressor labii inferioris
French
Muscle abaisseur de la lèvre inférieure
