tubercle

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Related to Tubercles: tuberculosis, Montgomery's tubercles, anatomic tubercle

tubercle

(to͞o`bərkyo͞ol') [Lat.,=little swelling], small, usually solid, nodule or prominence. In anatomy the term is applied to natural prominences in certain muscles, to nerve nuclei of the central nervous system, and to eminences on bones, especially in regions where muscles (through tendons) or bones (through ligaments) are attached. In dentistry tubercle refers to the cusp of a tooth. In pathology it describes small morbid growths, particularly the lesions of tuberculosistuberculosis
(TB), contagious, wasting disease caused by any of several mycobacteria. The most common form of the disease is tuberculosis of the lungs (pulmonary consumption, or phthisis), but the intestines, bones and joints, the skin, and the genitourinary, lymphatic, and
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. In botany it applies to the nodules on the roots or leaves of plants. In entomology the term is used for a compound or supplementary eye and for the nodules on the bodies of certain insects.

tubercle

[′tü·bər·kəl]
(biology)
A small knoblike prominence.
(metallurgy)
A mound of corrosive products on the surface of a metal that is subjected to local corrosive attack.

tubercle

1. any small rounded nodule or elevation, esp on the skin, on a bone, or on a plant
2. any small rounded pathological lesion of the tissues, esp one characteristic of tuberculosis
References in periodicals archive ?
Among the wide variety of ossicles we describe herein a new subtype of ctenoid scales, overgrowing ctenoid scales, and two kinds of tubercles--overgrowing ctenoid tubercles and circuloid tubercles.
Morphological alterations on the Schistosoma tegument were also quantitatively analyzed by counting the tubercles on the dorsal surface of male schistosomes (Fig.
Megaspore ornamentation open with few tubercles and with low, [+ or -]broad muri with [+ or -]even crests [Fig.
9); clypeus of some species with white markings or a white line; chelicerae frequently with dark bands anteriorly; eye region white or brown with eye tubercles greyish white; abdomen cream to yellow-brown, mottled with white, brown or blackish brown, some with a white pattern of longitudinal and cross lines; variably shaped brown markings on abdomen, leg segments, palpi and sternum.
Gonadosomatic index (GSI), liver somatic index (LSI), interocular distance (ID), widest head width (HW), tubercle count (TC), fatpad score (FPS), and fatpad weight (FPW).
Finger I shorter than Finger II; Toe V much longer thanToe III, extending to the distal edge of the distal subarticular tubercle on Toe IV.
An os trigonum should be differentiated from a fractured lateral-talar tubercle on a radiograph.
The potato tubercles were harvested 84 days after sowing (DAS), and the number of tubers per plant, tuber length and width, fresh mass of the tuber (g [plant.
These changes were dominated by severe mucopurulent nasal discharge, nodules and ulcers with pus in the choanae and nasal septae, and granulomas in the lungs that resembled tubercle lesions (pseudo tubercles).
The surface sculpture of glabella including the occipital ring consists of relatively large tubercles, except for three pairs of smooth muscle attachment areas; the posterior one is transversely elongated and situated just in front of S0, occupying about a third of the glabellar width; the middle is kidney-shaped and surrounds a shallow bifurcated lateral glabellar furrow situated mid way from the sagittal line towards the axial furrow; the anterior one is nearly circular, rather small and positioned close to the axial furrow just in front of the second one; the largest tubercles occur sagittally, and a pair of glabellar spines occurs on the far anterior, close to the mid-line.
sensitivus is a small barb (and does not grow to a much larger adult size than the three specimens reported here) is indicated by the marked sexual dimorphism of breeding tubercles on the heads of the two males (paratypes) versus their absence in the single female (holotype).