A treatise on diseases of the nose and its accessory cavities.

  • Macdonald, Greville, 1856-1944.
Date:
1892
Catalogue details

Licence: Public Domain Mark

Credit: A treatise on diseases of the nose and its accessory cavities. Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

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    Micro- scopical characters of erectile tissue Anatomy of venous Y - Z-' i growths that occasionally project backwards from the posterior extremity of the inferior turbinated body, I have succeeded in obtaining microscopical specimens in which the vessels are injected with blood. In this condition a very cursory examination is sufficient to manifest the whole structure and mechanism of these bodies. We find three well-defined layers : (1) the epithelial, (2) the fibro-vascular, and (3) the submucous, in which are contained racemose glands and the venous sinuses to which the erectile pro- perty is due. These sinuses form a loose, spongy network with little connective tissue separating their walls. When distended, the latter are seen to con- sist of a thin layer of connective tissue, ap- parently not elastic, and lined with an en- dothelium continuous with that of the veins which open directly into them. When empty the walls become corrugated and lie in close contact with one another. The arterioles, frequently tortuous, but becoming straightened when the structure is distended with blood, or when the connective tissue is ede- matous, run directly towards the surface, and there ramify in capillary vessels. These are gradually united - Fig. 4. >'. - -Showing arrangement of vessels of erectile tissue.