. Physiology, experimental and descriptive . se of the veins, in the lacteal at thebase of the villus. Then, when the muscles relax, the lactealis empty, and ready to absorb more of the emulsified fat thatwe call-chyle. The whole digestive tube may be briefly and roughlydescribed as a muscular tube of varying diameter, lined bymucous membrane. The muscular coat propels the contentsand mixes them with liquids ; the mucous coat is beset withglands, making liquids, some of which merely soak the food,others act on it chemically, while mucus serves to lubricatethe surface. It seems that these myria
. Physiology, experimental and descriptive . se of the veins, in the lacteal at thebase of the villus. Then, when the muscles relax, the lactealis empty, and ready to absorb more of the emulsified fat thatwe call-chyle. The whole digestive tube may be briefly and roughlydescribed as a muscular tube of varying diameter, lined bymucous membrane. The muscular coat propels the contentsand mixes them with liquids ; the mucous coat is beset withglands, making liquids, some of which merely soak the food,others act on it chemically, while mucus serves to lubricatethe surface. It seems that these myriads of Simple Glandsare not enough, so several large Compound Glands lie alongsidethe food tube, and empty their secretions into it by Duets j ORGAXS OF DIGESTION. 225 these supplementary glands are the salivary glands, the pan-creas, and the liver. The length of the small intestine is about twenty-five feet, Parotid Sali-vary Gland Gullet - Precaval VeinPostcaval Vein Hepatic Vein .. Portal Vein ..LiverBile Sac •Bile Duct Mesenteric .Vein.
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