A text-book of surgical principles and surgical diseases of the face, mouth, and jaws : for dental students / by H. Horace Grant.

  • Grant, H. Horace (Henry Horace), 1853-1921.
Date:
1902
Catalogue details

Licence: Public Domain Mark

Credit: A text-book of surgical principles and surgical diseases of the face, mouth, and jaws : for dental students / by H. Horace Grant. Source: Wellcome Collection.

Provider: This material has been provided by the Augustus C. Long Health Sciences Library at Columbia University and Columbia University Libraries/Information Services, through the Medical Heritage Library. The original may be consulted at the the Augustus C. Long Health Sciences Library at Columbia University and Columbia University.

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    offered a favorable field for germ infection, and the proc- esses of inflammation are set up. The result is the formation of an exudate, the escape of the products of inflammation. As this exudate becomes organized and a new tissue is formed there results what is called a hyper- plasia^ which is simply an increase of tissue-cells. If this hyperplasia include all the cells of the part, it is called hypertrophy. True hypertrophy is not inflamma- tory, but is a multiplication and development of all the cells of the part, so as to increase in every direction the contour and extent of the limb or other tissue in- FlG 5 —Circulation in hyperemia (Warren). volved. A chronic hyperplasia may alter the shape and appearance of the part disastrously, but this is the result rather of infiltration than of growth. Owing to a diminished blood-supply, due to the presence of the exudation from the vessels or to impaired—so-called trophic—nerve changes, the size of a limb may greatly diminish oi the limb may waste away. This process is termed atrophy. Even paralysis may succeed this change. If, after ordinary suffusion and even hyperemia, the irritation stops, no leak occurs in the vessels, and the