728 LYMPHATIC SYSTEM OF THE OX AND SHEEP 



pericardium, tlie peritoneum; the liver; the ribs, costal cartilages, and sternum; 

 the ventral mediastinal glands. The efferent vessels usually concur in forming 

 one or two trunks which run forward along the internal thoracic vessels to the 

 anterior gland. From the latter one or two efferents go to the anterior mediastinal 

 glands or directlj- to the end of the right tracheal duct or the thoracic duct (on the 

 left side). 



The axillary lymph gland lies on the medial face of the distal part of the teres 

 major on the course of the vein from the latissimus dorsi. It is oval in outline and 

 is usually a little more than an inch (ca. 3 cm.) in length. Quite exceptionally two 

 glands may be present. The efferent vessels come from most of the muscles of the 

 shoulder and arm, the muscles of the forearm, the trapezius, latissimus dorsi, pec- 

 toralis profundus, and cutaneus; the fascia of the forearm; the shoulder, elbow, and 

 carpal joints; the scapula, humerus, radius, ulna, and carpus; the infraspinatus 

 gland. The efferent vessels (one to three) go to the posterior cervical glands. . 



The infraspinatus lymph gland (Lg. infraspinata) is a small node which is present in 

 somewhat less than a fourth of the cases (Baum). It is situated at or near the posterior border of 

 the infraspinatus, about on a level with the proximal end of the caput longum. It receives lymph 

 vessels from the latissimus dorsi and sends an efferent \'essel to the axillary gland. 



The rhomboid lymph gland (Lg. rhomboidea) is small and only present in about 15 per 

 cent, of subjects (Baum). It is situated under the rhomboideus cervicalis near its ventral border 

 and the cervical angle of the scapula. It receives afferents from the rhomboideus, supras- 

 pinatus, and serratus ventralis, and sends efferents to the costocervical gland. 



The lumbar lymph glands (Lgg. lumbales) are situated along the abdominal 

 aorta and the posterior vena cava, and in some of the spaces between the transverse 

 processes.^ Some of the glands are dorsal to the i,-essels. Hgemolymph glands also 

 occur in this region. The afferent vessels come from the spinal, sublumbar, ab- 

 dominal, and serratus dorsalis muscles; the lumbo-dorsal fascia; the kidneys, 

 adrenals, and the peritoneum; the lumbar vertebrae. The efferent vessels go to 

 the lumbar trunk and the cisterna chjdi. 



The renal l3rmph glands (Lgg. renales) belong in reality to the preceding group, 

 from which they are only conventionally distinguished. They are situated on the 

 course of the renal vessels and vary in size and number. Their afferent vessels come 

 from the kidneys and adrenals, and the efferent vessels go mainly to the cisterna 

 chyli. 



The cceliac Ijmiph glands (Lgg. coeliacse), two to five in number, are situated on 

 and near the cceliac and anterior mesenteric arteries, and in relation to the left 

 extremity of the pancreas, the dorsal curvature of the rumen, and the posterior 

 vena cava. One is a large discoid gland which lies on the cceliac artery and the 

 origin of the chief branches of that vessel (Fig. 389). It is heart-shaped, marked 

 by a deep notch, and is about two inches (ca. 5-6 cm.) long and an inch and a half 

 (ca. 3-4 cm.) wide. Their afferent vessels come from the spleen. The efferent 

 vessels go to the common efferent vessel of the gastric lymph glands, or to the 

 intestinal trunk, or to the cisterna chyli. 



The internal iliac lymph glands are situated in relation to the terminal branches 

 of the aorta and the radicles of the posterior vena cava. They number commonly 

 six to eight and vary in length from half an inch to two inches (ca. 1-5 cm.). Their 

 afferent vessels come chiefly from muscles of the sublumbar region, pelvis, tail, and 

 thigh; from the genital organs; from the kidneys, bladder, and urethra. They also 

 receive vessels which are efferents of the external iliac, sacral, ischiatic, deep in- 

 guinal, prefemoral, and coxal glands. Their efferent vessels go chiefly to the lumbar 

 trunk. 



1 Baum distinguishes those about the vessels as lgg. lumbales aorticse, and terms those in 

 the intcrtrans\-erse spaces lgg. lumbales propria?, and regards them as corresponding to the dorsal 

 mediastinal and intercostal glands respectively. 



