. An analytical compendium of the various branches of medical science, for the use and examination of students. Anatomy; Physiology; Surgery; Obstetrics; Medicine; Materia Medica. 108 LARGE INTESTINE. Fig. 90. Li\ifO^H*Hf\'i^^J\*ft-;^Vr-is. from a few lines to a few inches. They consist of a cluster of smaller glands, and hence are often called aggregate7 These are ul- cerated in typhoid fever. Besides the villi and glands, the small intestine is found to present through- out its whole surface a great numbei- of follicles called after Lieberkijhn, that are in fact nothing more than interstices
. An analytical compendium of the various branches of medical science, for the use and examination of students. Anatomy; Physiology; Surgery; Obstetrics; Medicine; Materia Medica. 108 LARGE INTESTINE. Fig. 90. Li\ifO^H*Hf\'i^^J\*ft-;^Vr-is. from a few lines to a few inches. They consist of a cluster of smaller glands, and hence are often called aggregate7 These are ul- cerated in typhoid fever. Besides the villi and glands, the small intestine is found to present through- out its whole surface a great numbei- of follicles called after Lieberkijhn, that are in fact nothing more than interstices between the meshes of veins, which for the most part constitute the internal surface of the mu- cous layer. They are seen in the interstices of the villi. (Fig. 91.) The arteries are derived from the superior mesenteric, and the nerves from the solar plexus. The small intestine is divided into Duodenum, Jejunum, and Ilium. The Duodenum is about twelve inches in length, 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 and 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, em^pty)^ constitutes two-fifths of the small intestine, and the ilium the remaining three-fifths. Although there is no anatomical reason for this division, it being impossible, from its appearance, to say where the jejunum terminates, or the ilium begins, yet if a portion of the upper extremity of the jejunum be compared with a portion of the lower extremity of the ilium, it could be recognised by its diameter, abundance of valvuloe conni- ventes, and the presence of Brunner's rather than Peyer's Glands. There are frequently blind pouches^ varying in size from
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