. Human physiology. Fig. 103.—A Small Por-tion of the MucousMembrane of theSmall Intestine. Magnified 12 dia-meters. Fig. I02.—A Portion Of «, Peyers glands, surrounded the Small Intestine by tubular glands ; b, villi; laid Open to Show the ci openings of the tubular Folds of the Mucous glands Membrane (Valvules Conniventes). The nature of the secretions of these glands is not well under-stood. Some of them probably secrete mucus only ; others are sup-posed to resemble the salivary glands and the pancreas in function. The interior surface of the small intestine is covered also witha multitude
. Human physiology. Fig. 103.—A Small Por-tion of the MucousMembrane of theSmall Intestine. Magnified 12 dia-meters. Fig. I02.—A Portion Of «, Peyers glands, surrounded the Small Intestine by tubular glands ; b, villi; laid Open to Show the ci openings of the tubular Folds of the Mucous glands Membrane (Valvules Conniventes). The nature of the secretions of these glands is not well under-stood. Some of them probably secrete mucus only ; others are sup-posed to resemble the salivary glands and the pancreas in function. The interior surface of the small intestine is covered also witha multitude of minute projections called villi (Lat. shaggy hair)which give the surface a fine velvety appearance. These, however,will be described in our next lesson, as they are engaged in theabsorption of nutritious matter rather than in the digestion of food. When the partially digested food passes from the stomach,through the pylorus, it almost immediately mingles with two veryimportant digestive fluids, called the bi
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