Anatomy & Physiology: Muscles—Depressor labii inferioris.
Structure.
- Origin: mandible.
- Insertion: skin of lower lip.
Function.
- Concentric action: depresses (lowers) lower lip; draws laterally the lower lip; everts lower lip.
- Reverse mover action:
- Eccentric action:
- Isometric action:
- Innervation: facial VII nerve.
- Arterial supply: facial artery (branch of the external carotid artery).
Clinical Significance.
More.
- http://anatomyzone.com/tutorials/musculoskeletal/muscles-of-facial-expression/
- https://www.anatomynext.com/depressor-labii-inferioris/
Depressor labii inferioris. Used with permission by 3D4Medical.
References
Biel, A. (2015). Trail guide to the body: A hands-on guide to locating muscles, bones and more.
Clark, M., Lucett, S., Sutton, B. G., & National Academy of Sports Medicine. (2014). NASM essentials of corrective exercise training. Burlington, MA: Jones & Bartlett Learning.
Jenkins, G., & Tortora, G. J. (2012). Anatomy and Physiology: From Science to Life, 3rd Edition International Stu. John Wiley & Sons.
Muscolino, J. E. (2017). The muscular system manual: The skeletal muscles of the human body.
