A treatise on special and general anatomy: in two volumes (Volume 2).

  • Horner, William E. (William Edmonds), 1793-1853.
Date:
1830
Catalogue details

Licence: Public Domain Mark

Credit: A treatise on special and general anatomy: in two volumes (Volume 2). Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    near the cardia, but become more abundant as they are exa- mined towards the pylorus, in the vicinity of which they are multiplied so as to form a lamina of two lines or more in thickness. They are parallel with each other, and, when the stomach is much distended, their fasciculi separate so as to leave interstices between them in many places. The in- dividual fibres do not surround entirely the stomach, but are rather segments of circles. The third and deepest series of fibres may be called oblique, and are arranged into two broad flattened fasciculi, one of which is placed to the left side of the cardia, and is prolonged over the anterior and the posterior faces of the stomach; while the other, being to the right of the same orifice, is extended over the anterior and the posterior faces of the cul-de-sac, where it supplies the want of transverse or circular fibres; they are considered as a con- tinuation of the circular fibres of the oesophagus. The Nervous Coat connects the muscular with the mu- cous. It is formed from a compact, thick, and short cellu- lar substance, which contributes much to the general strength of the organ, and serves to conduct the blood vessels and the nerves to the mucous coat. The Mucous or Villous Coat is the most internal, is not quite a line in thickness, and can be readily raised up by dissection. In an undistended state of the stomach it is brought into a number of wrinkles, which are very irregu- lar in their form, size, and direction, and disappear imme- diately on inflation, or at least leave but very faint traces. It is continuous with the internal membrane of the oesopha- gus and of the duodenum, but presents a surface differing from either of them, and which is rendered very apparent by floating it in water. The epidermis, which is continued along the internal face of the oesophagus, ceases around the cardiac orifice, and, by a slight maceration, may be raised up and demonstrated to terminate there. This membrane or coat, the office of which is to secrete the gastric juice for the digestion of articles of food, presents a surface that resembles very much common velvet, from whence the term villous was applied to it. It is very com-