IMMUNOLOGY

Detailed explanation-1: -Bronchomediastinal lymph trunks, located in the chest, drain lymph fluid from the lungs, heart, trachea, mediastinal, and mammary glands. Lumbar lymph trunks are the lower pair of lymph trunks that drain lymph fluid from the legs, pelvic region, and kidneys.

Detailed explanation-2: -The bronchomediastinal lymph trunks are large efferent lymphatic channels draining into the venous system within the neck but originating within the mediastinum. The sources of lymphatics which run into the bronchomediastinal trunks include: sternal-internal thoracic-nodes. tracheobronchial lymph nodes.

Detailed explanation-3: -The visceral lymph nodes are responsible for the lymphatic drainage of the thoracic viscera such as the heart and the lungs. These nodes include the brachiocephalic nodes, the posterior mediastinal nodes and the tracheobronchial nodes.