genial tubercle

men·tal spine

[TA]

a slight projection, sometimes two (superior and inferior), in the middle line of the posterior surface of the body of the mandible, giving attachment to the geniohyoid muscle (below) and the genioglossus (above).

Synonym(s): spina mentalis (inferior et superior) [TA], genial tubercle, spinae geniorum inferior et superior

men·tal spine

(men'tăl spīn) [TA]

A slight projection, sometimes two, in the middle line of the posterior surface of the body of the mandible, giving attachment to the geniohyoid muscle (below) and the genioglossus (above).
Synonym(s): genial tubercle.

genial tubercle

The tubercle on either side of the lower jawbone.

See also: tubercle

ge·ni·al tu·ber·cle

(jĕ-nī'ăl tū'bĕr-kĕl)

A small eminence of bone found on the lingual side of the mandible at the midline that serves as attachment site for the genioglossus and geniohyoid muscles.
Synonym(s): mental spine.