. Kirkes' handbook of physiology . Quain.) of surface into contact with the digesting food, which is thus separated froma loop of capillaries and lymphatic radicals. The capillaries of the villus are connected with the veins which contributeto the portal vein, hence carry blood to the liver. The lacteals of the villuscontribute to the mesenteric lacteal system, hence the chyle and lymph passthrough the mesenteric glands and the portal duct to the subclavian veinin the neck. There are thus two routes by which absorbed foods may reachthe general circulation. These paths can be independently isol
. Kirkes' handbook of physiology . Quain.) of surface into contact with the digesting food, which is thus separated froma loop of capillaries and lymphatic radicals. The capillaries of the villus are connected with the veins which contributeto the portal vein, hence carry blood to the liver. The lacteals of the villuscontribute to the mesenteric lacteal system, hence the chyle and lymph passthrough the mesenteric glands and the portal duct to the subclavian veinin the neck. There are thus two routes by which absorbed foods may reachthe general circulation. These paths can be independently isolated; and a ABSORPTION OF PROTEIDS FROM THE INTESTINES 365 study of the composition of their discharge during active absorption con-tributes to our knowledge of the course taken by the different absorptionproducts. Absorption of Proteids from the Intestines. Proteid is absorbedchiefly in the small intestine, though just exactly how cannot at present beaffirmed. In the preceding chapter the cleavage products of proteid diges- I \IW. Fig. 281. Fig. 282. Fig. 281.—Superficial Lymphatics of the Forearm and Palm of the Hand, J.—5; Two smallglands at the bend of the arm; 6, radial lymphatic vessels; 7, ulnar lymphatic vessels; 8, arch of lymphatics; 9, 9, outer and inner sets of vessels; b, cephalic vein, d, radialvein; e, median vein; /, ulnar vein. The lymphatics are represented as lying on the deep fascia.(Mascagni.) Fig. 282.—Lymphatic Vessels of the Head and Neck and the Upper Part of the Trunk. (Mas-cagni.) J.—The chest and pericardium have been opened on the left side, and the left mamma de-tached and thrown outward over the left arm, so as to expose a great part of its deep surface. Theprincipal lymphatic vessels and glands are shown on the side of the head and face, and in the neck,axilla, and mediastinum. Between the left internal jugular vein and the common carotid upper ascending part of the thoracic duct marked I, and above this, and descendin
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