A dictionary of terms used in medicine and the collateral sciences / by Richard D. Hoblyn.

  • Richard Hoblyn
Date:
1858
Catalogue details

Licence: Public Domain Mark

Credit: A dictionary of terms used in medicine and the collateral sciences / by Richard D. Hoblyn. Source: Wellcome Collection.

    646/692 (page 618)
    2. Tuhercula miliaria. By the term sebaceous miliary iuhercles Mr. E. Wilson designates the email, white tubercles, of about the size of a millet seed, or sometimes of a small pea, which arc occasioned by the collection of the sebaceous substance within an excretory follicle, the aperture of that follicle being impervious. These aie the follicular elevations of Rayer, the exormia milium of Mason Good, the grutum or milium of Plenck, and, commonly,/jeaW^ tubercles. TUBERCUF.UM AURANTII. A small tubercle situated at the middle part of the free edge of the aortic and pulmonary valves. TUBERCULUM LOWERl. A portion of auricle intervening be- tween the orifices of the venas cavse, supposed by Lower to direct the blood from the superior cava into the auriculo-ventricular opening. TUBERCULA QUADRIGEMINA. Four tubercles occurringon the posterior surface of the pons Varolii; the two upper are termed the nates; the two lower, the testes. In the lower animals they are called optic lobes. TU'BULATURE {tubuhis, a. ]\tt\e pipe). The mouth, or shortneck, at the upper part of a tubulated retort. The long neck is called the beak. See Retort. TU'BULUS (dim. of tiilms, a pipe). A little tube, or pipe. 1. Tulmli lactiferi vel qalactophori. The minute ducts or tubes of the papilla, through which the milk passes. 2. 1'ulmli seminiferi. Vasa seminalia. Minute tubes, constituting the parenchyma of the testis. According to the observations of Monro, they do not exceed jjijth part of an inch in diameter. . • 3. Titbiili uriiiiferi. Minute convergent excretory tubes, constituting the tissue of the tubular substance of the kidney. Their orifices are called the ducts of Belini. 4. Tubulorum, corona. The circle of minute tubes surrounding each of Peyer's glands in the intestines. See Corona. TU'MOR {tumeo, to swell). A swelling. Tumors may be dis- tinguished into the sarcomatous, so nauied from their firm fleshy feel, and the mcysted, commonly called wens. The former have been clas- sified, by Abernethy, into—• 1. Common Vascular, or Organized Sarcoma ; including all those tumors which appear to be composed of the gelatinous part of the blood, rendered more or less vascular by the growth of vessels through it. 2. Adipose Sarcoma; including fatty tumors, formed at first, like the preceding, of coagulable lymph, rendered vascular by the growth of vessels into them, and depending for their future structure on the par- ticular power and action of the vessels. 3. Pancreatic Sarcoma; so called from the resemblance of its struc- ture to that of the pancreas. 4. Mastoid, or Mammary Sarcoma; so called irora the resemblance of its structure to that of the mammary glands. This species is placed between such sarcomatous tumours as are attemied with no malignity, and the following ones, which have this quality in a very destructive degree. 5 Tidierculated Sarcoma; composed of a great many small, tirm, roundish tumors, of different sizes and colours, connected together by cellular substance. . . . 6. Medullar,, Sarcoma ; so named from its presenting the appearance of the medullary matter of the brain.