Assertion: udder's vein | /r/CapableOf | drain into caudal vena cava
Facets:
Source sentences:
text: 2 pathways: subcutaneous abdominal vein ("milk vein") - primary drainage, caudal and cranial superficial epigastric veins, runs cranially to join internal thoracic vein; and external pudendal vein through the inguinal canal draining into caudal vena cava; with udder enlargement -> venous valves become incompetent allowing for blood flow in both directions following path of least resistance (allows for drainage when milk vein collapses when the cow lays down)