Bone: Symphysis menti
Mandible. Outer surface. Side view. (Symphysis menti visible at left).
Latin	symphysis mandibulae
Gray's	subject #44 172

The external surface of the mandible is marked in the median line by a faint ridge, indicating the symphysis menti, mandibular symphysis, or line of junction of the two pieces of which the bone is composed at an early period of life.

This ridge divides below and encloses a triangular eminence, the mental protuberance, the base of which is depressed in the center but raised on either side to form the mental tubercle.

It serves as the origin for the Geniohyoid and the Genioglossus.

[edit] See also

• symphysis
• dimple

[edit] Additional images

Muscles of the neck. Lateral view.

Muscles of the neck. Anterior view.

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.

v • d • e Bones of head and neck: the facial skeleton of the skull (TA A02.1.08-15, GA 2.156-177) Maxilla Surfaces Anterior: fossae (Incisive fossa, Canine fossa) · Infraorbital foramen · Anterior nasal spine Infratemporal: Alveolar canals · Maxillary tuberosity Orbital: Infraorbital groove · Infraorbital canal Nasal: Pterygopalatine canal Processes Zygomatic process Frontal process (Agger nasi, Anterior lacrimal crest) Alveolar process Palatine process (Incisive foramen, Incisive canals, Foramina of Scarpa, Incisive bone, Anterior nasal spine) Other Body of maxilla · Maxillary sinus Zygomatic Orbital process (Zygomatico-orbital) · Temporal process (Zygomaticotemporal) · Lateral process (Zygomaticofacial) Palatine Fossae Pterygopalatine fossa · Pterygoid fossa Plates Horizontal plate (Posterior nasal spine) · Perpendicular plate (Pterygopalatine canal, Sphenopalatine foramen, Pyramidal process) Processes Orbital · Sphenoidal Mandible Body external surface (Symphysis menti, Mental protuberance, Mental foramen, Mandibular incisive canal) · internal surface (Mental spine, Mylohyoid line, Sublingual fovea, Submandibular fovea) · Alveolar part of mandible Ramus Mylohyoid groove (Mandibular canal, Lingula) · Mandibular foramen · Angle Coronoid process · Mandibular notch · Condyloid process · Pterygoid fovea Minor/ nose Nasal bone: Internasal suture · Nasal foramina Inferior nasal concha: Ethmoidal process · Maxillary process Vomer: Wing Lacrimal: Posterior lacrimal crest · Lacrimal groove · Lacrimal hamulus

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