A mental spine is a small projection of bone on the posterior aspect of the mandible (jaw bone) in the midline. There are usually four mental spines: two superior and two inferior. Collectively they are also known as the genial tubercle, genial apophysis and the Latin name spinae mentalis. The inferior mental spines are the points of origin of the geniohyoid muscle, one of the suprahyoid muscles and the superior mental spines are the origin of the genioglossus muscle, one of the muscles of the tongue.
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Famous quotes containing the words mental and/or spine:
“The tranquility and peace that a scholar needs is something as sweet and exhilarating as love. Unspeakable joys are showered on us by the exertion of our mental faculties; the quest of ideas, and the tranquil contemplation of knowledge; delights indescribable, because purely intellectual and impalpable to our senses.”
—Honoré De Balzac (1799–1850)
“Much of a man’s character will be found betokened in his backbone. I would rather feel your spine than your skull, whoever you are. A thin joist of a spine never yet upheld a full and noble soul.”
—Herman Melville (1819–1891)