GENERAL HISTOLOGY

Detailed explanation-1: -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.

Detailed explanation-2: -There are more than 600 small, kidney bean-shaped lymph nodes in clusters throughout your body–under your neck, in your armpits and groin, and in the middle of your chest and belly.

Detailed explanation-3: -The thoracic duct drains lymph from the right and left descending thoracic lymph trunks, originating from the lower 6 intercostal spaces (6 to 11). The duct also receives lymph from intercostal spaces 1 to 5 via the upper intercostal lymph trunks. Additional tributaries include the: mediastinal lymph trunks.