Report On The State Of The Blood And The Blood-vessels In Inflammation, And On Other Points Relating To The Circulation In The Extreme Vessels: Together With A Report On Lymphatic Hearts And On The Propulsion Of Lymph From Them, Through A Proper Duct
Report On The State Of The Blood And The Blood-vessels In Inflammation, And On Other Points Relating To The Circulation In The Extreme Vessels: Together With A Report On Lymphatic Hearts And On The Propulsion Of Lymph From Them, Through A Proper Duct
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1891 Excerpt: ...vascularity in the cornea, however, does not always occur, even in the healing process. Ordinarily, the incision of the cornea for the extraction of a cataract unites by the first intention without the development of new vessels in its substance, and we sometimes see an ulcer of the cornea become filled up with non ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1891 Excerpt: ...vascularity in the cornea, however, does not always occur, even in the healing process. Ordinarily, the incision of the cornea for the extraction of a cataract unites by the first intention without the development of new vessels in its substance, and we sometimes see an ulcer of the cornea become filled up with non-vascular granulations. 66. In Keratitis, we have thus a natural analysis of the phenomena of the inflammatory process in its two great initiatory stages--the congestion in one place, and the supervening exudation in another. Moreover, we have a welldefined example of the mode in which irritation may be D communicated to the vessels of the conjunctiva and the sclerotica, independently of any direct lesion. In a vascular part the irritation might operate directly on the vessels themselves or on the blood, but in the case of the cornea there is neither vessel nor blood to be directly acted on. 67. The mode in which the vessels of the conjunctiva and sclerotica are affected in consequence of irritation applied to the cornea alone, is this: the excitement of the sensitive nerves of the cornea is transmitted to their centre, and thence by reflex action to the vaso-motor nerves of the arterioles of the adjoining part of the conjunctiva and sclerotica, so that contraction of the muscular walls of those vessels with corresponding constriction of their calibre is induced, and the consequence of this is impediment to the free flow of blood, followed by retention of red corpuscles, which become aggregated and stagnant in the manner above described as taking place in the establishment of congestion, in an ordinary vascular structure. 68. Morbid action may, however, commence in the substance of the cornea itself independently of any injury...
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