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Muscles / Head & neck

Depressor labii inferioris

Anatomy

Origin
Oblique line of the mandible (continuous with platysma)
Insertion
Skin of the lower lip
Nerve
Facial nerve (CN VII), marginal mandibular branch

Actions

  • Depresses and everts the lower lip
References (4)
  1. Standring S, ed. Elsevier. Gray's Anatomy: The Anatomical Basis of Clinical Practice. 42nd ed.
  2. Dalley AF, Agur AMR. Wolters Kluwer. Moore's Clinically Oriented Anatomy. 9th ed.
  3. Neumann DA. Elsevier. Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation. 3rd ed.
  4. Betts JG, Young KA, Wise JA, et al. OpenStax (free, openly licensed textbook). Anatomy and Physiology 2e