Tubercle

A small tuber, used for any small growth (hypothetically) associated with symbiotic organisms;


A small rounded protuberance on a bone. For example, there are two tubercles at the upper end of the humerus.


(In ball- or barrel-shaped cacti), cone-shaped protuberances that are enlarged modified leaf bases fused with adjacent stem tissue.


A small excrescence.


Round nodule or small, wartlike projection.


A knoblike projection (as on a cactus joint).


A fibrous capsule that walls off the destructive action of tubercle bacilli in living tissue.


A small bony projection, e.g. on a rib.


A small infected lump characteristic of tuberculosis, where tissue is destroyed and pus forms.


An outgrowth from a stem, leaf or fruit, usually hemispherical to rather more cylindrical. The stems of many kinds of cacti are covered in a regular arrangement of tubercles, most notably Mammillaria. Tuberous root A root that is swollen to resemble a tuber, as in dahlias. Most root tubers will not sprout again when cut away, unless a small piece of the stem or rootstock is taken as well.


Small lesions of inflammation associated with tuberculosis.


The term is used in two distinct senses. As a descriptive term in anatomy, a tubercle means a small elevation or roughness upon a bone, such as the tubercles of the ribs. In the pathological sense, a tubercle is a small mass, barely visible to the naked eye, formed in some organ as the starting-point of tuberculosis. The name of tubercle bacillus was originally given to the micro-organism that causes this disease, but was subsequently changed to Mycobacterium tuberculosis. The term ‘tubercular’ should strictly be applied to anything connected with or resembling tubercles or nodules, and the term ‘tuberculous’ to anything pertaining to the disease tuberculosis.


Abnormal, rounded, solid lump above, within, or under the skin; larger than a papule.


A gray, lumpy formation that appears in tissues impacted by tuberculosis is referred to by this term. It can also describe a small, rounded bump that may emerge on the surface of a bone.


A tiny lump or bump.


A rounded projection on a bone.


The distinct type of damage caused by the tuberculosis bacterium is composed of a cluster of round cells, which may sometimes contain giant cells, all encircled by a layer of elongated cells.


 


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