Handbook of meat inspection . i::~^a Calf sling. a and a, bronchial planus ; h,anterior and posterior media-stinal glands; c, portal glands. * The intercostal muscles can not be infected by translocation of tuberculouslymph from the pleura. Furthermore, the lymph vessels take their origin in theintercostal muscles, and pass thence toward the pleura or mediastinal Spaces. NORMAL APPEARANCE 183 5. Bronchial (jhnvl^ (Figs. 22, a,a).—Lyiug ou botli siiles of tbetracbea, at its poiut of bifurcation, are coveretl by tlie aorta, and, infat auimals, also by fat tiasue. They may be exposed by a deepinc
Handbook of meat inspection . i::~^a Calf sling. a and a, bronchial planus ; h,anterior and posterior media-stinal glands; c, portal glands. * The intercostal muscles can not be infected by translocation of tuberculouslymph from the pleura. Furthermore, the lymph vessels take their origin in theintercostal muscles, and pass thence toward the pleura or mediastinal Spaces. NORMAL APPEARANCE 183 5. Bronchial (jhnvl^ (Figs. 22, a,a).—Lyiug ou botli siiles of tbetracbea, at its poiut of bifurcation, are coveretl by tlie aorta, and, infat auimals, also by fat tiasue. They may be exposed by a deepincisiou from above and outward to tlie point of bifurcation. Affer-ent vessels from tlie luugs and posterior mediastinal glands. Effer-ent vessels to the anterior mediastinal glands and thoracic duct. (b) abdominal and pelvic cavities. 1. Lumhar glands (Fig. 21, d).—These lie near the lumbar ver-tebrae, in part covered by the lumbar muscles. Two groups of them, Fig. Beef mesentery with tuberculous lymphatic glands. which lie on either side in the angle between the external iliacartery and the deep, circumflex iliac artery, as well as in the angleof both hypogastric arteries, are especially designated as the internaliliac glands (Figs. 19, e,f; 21, c). Afferent vessels from the pelvicOrgans, lumbar muscles and upper parts of the abdominal wall;also efferent vessels of the external iliac glands. The vessels of thelumbar glands empty into the thoracic duct. 2. The externcd iliac (jlands are located near the lateral iliacangle, at the point of bifurcation of the deep, circumflex iliac vessels come from the lateral and inferior abdominal walland the lateral surfaces of the femoral region, as well as from the 184 APPEARANCE AND DIFFERENTIATION OF MEAT AND ORGANS external subiliac glands. The ejßferent vessels of tlie external iliacglands pass to tbe lumbar glands. 8. The sacral glands on the inferior wall of the sacrum, near itslateral
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