An Analytical compendium of the various branches of medical science : for the use and examination of students / by John Neill and Francis Gurney Smith.

  • Neill, John, 1819-1880.
Date:
1866
Catalogue details

Licence: Public Domain Mark

Credit: An Analytical compendium of the various branches of medical science : for the use and examination of students / by John Neill and Francis Gurney Smith. Source: Wellcome Collection.

Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.

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    The small intestine is divided into Duodenum, Jejunum, and Ileum. The Duoclenum commences at the pylorus, and is about twelve inches in length. It is curved in its direction, and partially deficient in its peritoneal coat, on account of its being received between the two laminae of the colic omentum. Its mucous coat is characterized by its colour, being tinged with bile, and by the great abundance of valvulae conniventes in its lower part; the upper part contains the glands of Brunner. The ductus communis choledochus opens into the duode- num four or five inches from the pylorus, through a small elevation or tubercle. The Jejunum (from jejunus, empty), constitutes two-fifths of the small intestine, and the ileum the remaining three-fifths. Although there is no anatomical reason for this division, it being impossible, from appearances, to say where the jejunum terminates or the ileum begins, yet if a portion of the upper extremity of the jejunum be com- pared with a portion of the lower extremity of the ileum, it could be recognised by its diameter, abundance of valvulae conniventes, and the small number oi Peyer's Glands. There are frequently blind pouches, varying in size from one to two inches, along the course of this small intestine. LARGE INTESTINE. The large intestine reaches from the ileum to the anus, and is one- fifth in length of the whole intes- Fig 91. ^ tinal canal; it differs much from the small intestine in its diame- ter, and has a sacculated appear- ance. Like the small intestine, it consists of four coats. The peritoneal coat is continu- ous with the meso-colon, and has numerous folds filled with fat, which are called aiDpendices epi- ploic ae. The muscular coat consists of two sets of fibres; the longitudi- nal fibres are collected into three bands, each about half an inch in breadth, which extend to the rec- tum ; the circular fibres are also thicker than those of the small intestine. The cellular coat connects the mucous and muscular, and con- tains the blood-vessels and nerves. The mucous coat has no valvular cormivcntes nor villi; it is whiter,