The genial tubercle is a small projection of bone found in the midline of the mandible, specifically at the area where the two sides of the jawbone meet. The pronunciation of this anatomical term is as follows: ˈdʒiːnɪəl ˈtjuːbəkəl. The first syllable "genial" is pronounced with a soft G sound followed by a long E vowel, while the second syllable "tubercle" is pronounced with a T and a "yoo" sound, followed by the short E vowel and a K sound at the end.
The genial tubercle is a small bony projection found on the midline of the mandible, specifically on the lingual surface of the mandibular symphysis. It is an anatomical landmark that serves as an attachment point for various muscles and ligaments in the oral cavity.
In terms of its structure, the genial tubercle is a rounded and prominent elevation that is located just above the mental spines on the mandible. It is considered a point of reference for dental professionals during procedures such as local anesthesia administration, dental implant placement, or orthodontic treatments.
The genial tubercle plays a significant role in the stabilization of the tongue and other related structures. It provides attachment sites for muscles like the genioglossus and geniohyoid muscles, which are responsible for tongue movement and swallowing. Additionally, it acts as a support for the mentalis muscle, which plays a role in facial expression and lip movements.
In dental terminology, the genial tubercle is also known by other names such as the mental spine, lingual spine, or genial process. Although its function may seem small, the genial tubercle is an essential anatomical feature that contributes to the overall function and movements of the tongue, lips, and other oral structures.
A small nodule on the posterior surface of the arch of the mandible on either side of the symphysis, spina mentalis.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The word "genial tubercle" has a Latin origin.
"Genial" is derived from the Latin word "genialis", which means "of or pertaining to birth, race, or nature". In this context, it specifically refers to the chin or mental region.
"Tubercle" comes from the Latin word "tubercul" meaning a small swelling or protuberance. It is commonly used in anatomy to describe a small, rounded projection or prominence on a bone.
Combining these two terms, "genial tubercle" refers to a small bony protuberance located on the mental symphysis (midline of the lower jaw) in humans.