Which region's lymph of the pleura or lungs may drain into axillary lymph nodes?
A. Visceral pleura and parenchyma of right lung B. Visceral pleura and the superior lobe of left lung C. Cervical parietal pleura of either lung D. Visceral pleura and the inferior lobe of left lung E. Coastal parietal pleura of either lung
The answer to this question is letter C. For those who do not know, the pulmonary pleura are the invaginated sac on each lung that attaches each lung to the thoracic cavity. This will drain directly to axillary lymph nodes. There are some people who question why lung cancer is considered to be deadly.
It is because the various parts of the lungs may not have nerves that will signify pain. This means that by the time that the cancer is checked on, it might already be too late. The pulmonary pleura both have a large blood supply that will make sure that blood will continue to circulate around the body without getting into the lungs.
Cervical parietal pleura of either lung -the parietal pleura associated with the cupola extends superior to the first rib into the cervical region and may drain directly into axillary lymph nodes. lymph from the visceral pleura and parenchyma of the right lung drains via superficial and deep plexuses, pulmonary nodes, bronchopulmonary nodes, and tracheobronchial nodes, to the right bronchomediastinal trunk, which may terminate in a short lymphatic duct before reentering the venous system at the juncture of the right subclavian and jugular veins. lymph from the visceral pleura and superior lobe of the left lung follows a similar pathway on the left, terminating in the thoracic duct. lymph from the visceral pleura and parenchyma of the inferior lobe of the left lung may enter the right-side pathway at the right tracheobronchial nodes. lymph from most of the parietal pleura drains via intercostal, parasternal, mediastinal, and phrenic nodes of the thoracic wall.