. The American journal of anatomy. hrough the persistence of one of the embryoniccross anastomosing branches (fig. 4). Type 5. In this type of thoracic duct, we would have cephaladthe persistence of the original double thoracic duct of the caudal portion of the right duct would be completely atro-phied and the cephalic portion of the right duct would join theleft duct through the persistence of one of the embryonic crossanastomosing branches (fig. 5). Type 6. In this type of thoracic duct, we would have thepersistence of the cephalic portion of the left duct and the caudalportion of
. The American journal of anatomy. hrough the persistence of one of the embryoniccross anastomosing branches (fig. 4). Type 5. In this type of thoracic duct, we would have cephaladthe persistence of the original double thoracic duct of the caudal portion of the right duct would be completely atro-phied and the cephalic portion of the right duct would join theleft duct through the persistence of one of the embryonic crossanastomosing branches (fig. 5). Type 6. In this type of thoracic duct, we would have thepersistence of the cephalic portion of the left duct and the caudalportion of the right duct. These two segments would be joinedtogether by the persistence of one of the embryonic cross anas-tomosing branches. The caudal portion of the left duct wouldbe completely atrophied and the cephalic portion of the rightduct would persist as the right lymphatic duct (fig. 6). Type 7. In this type of thoracic duct, we would have thepersistence of the cephalic portion of the right duct and the THORACIC DUCT IN MAN 215. Right Duct Fig. A Schematic representation of the embryonic lymph channels. Fig. 1 Type 1; schematic representation of the embryonic lymph channelswhich might persist. Fig. 2 Type 2; schematic representation of the embryonic lymph channelswhich might persist. Fig. 3 Type 3; schematic representation of the embryonic lymph channelswhich might persist. Fig. 4 Tj^pe -1; schematic representation of the embryonic lymph channelswhich might persist. 216 HENRY K. DAVIS caudal portion of the left duct. These two segments wouldbe joined together through the persistence of one of the embryoniccross anastomosing branches. The caudal portion of the rightduct would be completely atrophied and the cephalic portionof the left duct would not connect with the thoracic duct and itwould persist as a left lymphatic duct (fig. 7). Type 8. In this type of thoracic duct, we would have thecomplete persistence of the right embryonic duct. The caudalportion of the left duct wou
Size: 1396px × 1790px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectanatomy, bookyear1901
