. The new hydropathic cook-book : with recipes for cooking on hygienic principles : containing also a philosophical exposition of the relations of food to health : the chemical elements and proximate constitution of alimentary principles : the nutritive properties of all kinds of aliments : the relative value of vegetable and animal substances : the selection and preservation of dietetic materials, etc., ALIMENTARY CANAL. In a strict physiological sense the duodenum may beregarded as a second stomach, and the jejunum as a third;and we should scarcely trench on the field of imaginationif
. The new hydropathic cook-book : with recipes for cooking on hygienic principles : containing also a philosophical exposition of the relations of food to health : the chemical elements and proximate constitution of alimentary principles : the nutritive properties of all kinds of aliments : the relative value of vegetable and animal substances : the selection and preservation of dietetic materials, etc., ALIMENTARY CANAL. In a strict physiological sense the duodenum may beregarded as a second stomach, and the jejunum as a third;and we should scarcely trench on the field of imaginationif vre called the ileum a fourth; for through the whole lengthof the small intestines the process of digestion really goes on,a solvent fluid being secreted along their whole inner surface,though most copiously toward the stomach ; while lacteal vesbp]s, or chyle-carriers, open their mouths upon every portionof their mucous coat, though most abundantly toward thef-omach. In the duodenum the separation of chyle commences, and 140 Hydropathic Cook-Book Arrangement of the Valvule Cot ntventes-View of the Laeteals. in the jejunum we find an admirable arrangement for re-taining the chyle, that time may be allowed for the lacteals to take it up. Fig. INTERNAL VrEW 07 TIH! JEJUNUM. Fig. 94 is an internal view of a portion of the jejunum,showing the arrangement of the mucous folds into valvulaeconniventes—valves which retard or moderate the progress ofthe chylous fluid without arresting its course. The chyle inits downward course along the small intestines gradually dis-appears, until at the termination-of the ileum scarcely any por-tion of it can be detached. Fig. 95.
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Keywords: ., bookcentury1800, booksubjectfood, booksubjectnutritionalphysiolo
