Transversus menti muscle
Musculus transversus menti
- Related terms: Transversus menti
Definition
The transversus menti muscle is a superficial, variably present facial muscle located in the chin region. It maybe rudimentary or absent in many individuals. It represents the interlacing transverse fibres of the depressor anguli oris muscles from both sides,
Origin
From the fibres of the depressor anguli oris muscle on one side of the face, near the midline of the chin.
Insertion
Into the corresponding fibres of the contralateral depressor anguli oris, forming a transverse interlacing band across the mentum (chin).
Innervation
Marginal mandibular branch of the facial nerve (cranial nerve VII).
Blood supply
Inferior labial branch of the facial artery and the mental branch of the maxillary artery.
Action
The transverse menti muscle contributes to symmetrical depression and stabilization of the corners of the mouth during facial expression.
Mnemonic aid; “Transversus ties the corners.” — It connects the left and right depressor anguli oris muscles across the chin.
References
WEAVER, CYPRIAN PH.D.. FREQUENCY OF OCCURRENCE OF THE TRANSVERSUS MENTI MUSCLE. Plastic and Reconstructive Surgery 61(2):p 231-233, February 1978.
Gray, H. (2016) Gray’s Anatomy: The Anatomical Basis of Clinical Practice. 41st edn. Edited by S. Standring. New York: Elsevier. Chapter 30: Face and Scalp, pp. 495.
