mental tubercle

tubercle /tu·ber·cle/ (-k'l)

1. any small, rounded mass produced by infection with Mycobacterium tuberculosis.

2. a nodule or small eminence, especially one on a bone for attachment of a tendon.

3. the cusp of a tooth.

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anatomical tubercle  tuberculosis verrucosa cutis.

auricular tubercle , auricular tubercle of Darwin, darwinian tubercle a small projection sometimes found on the edge of the helix; conjectured by some to be a relic of simioid ancestry.

Farre's tubercles  masses beneath the capsule of the liver in some cases of hepatocellular carcinoma.

fibrous tubercle  one of bacillary origin which contains connective-tissue elements.

genial tubercle, inferior  inferior mental spine.

genial tubercle, superior  superior mental spine.

genital tubercle  an eminence ventral to the cloaca in the early embryo; the primordium of the penis or clitoris.

Ghon tubercle  see under focus.

gracile tubercle  an enlargement of the fasciculus gracilis in the medulla oblongata, produced by the underlying nucleus gracilis.

intervenous tubercle  a ridge across the inner surface of the right atrium between the openings of the venae cavae.

Lisfranc's tubercle  an eminence on the first rib, for attachment of the anterior scalene muscle.

Lower's tubercle  intervenous t.

mental tubercle  a prominence on the inner border of either side of the mental protuberance of the mandible.

miliary tubercle  one of the many minute tubercles formed in many organs in acute miliary tuberculosis.

pubic tubercle of pubic bone  a prominent tubercle at the lateral end of the pubic crest.

scalene tubercle  Lisfranc's t.

supraglenoid tubercle  one on the scapula for attachment of the long head of the biceps.

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mental tubercle

Etymology: L, mentum, chin

one of a bilateral pair of prominences on the lower border of the body of the mandible.

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tubercle [too´ber-k'l]

1. a nodule or small eminence, especially one on a bone, for attachment of a tendon; see also tuber and tuberosity. Called also tuberculum. adj., adj tuber´cular, tuber´culate.

2. a small, rounded nodule produced by the bacillus of tuberculosis (Mycobacterium tuberculosis). It is made up of small spherical cells that contain giant cells and are surrounded by spindle-shaped epithelioid cells.

fibrous tubercle a tubercle of bacillary origin that contains connective tissue elements.

Ghon tubercle Ghon focus.

mental tubercle a prominence on the inner border of either side of the mental protuberance of the mandible.

miliary tubercle one of the many minute tubercles formed in many organs in acute miliary tuberculosis.

pubic tubercle a prominent tubercle at the lateral end of the pubic crest.

supraglenoid tubercle one on the scapula for attachment of the long head of the biceps muscle.