What watersheds delineate the tributary region for the supraclavicular lymph nodes?

The supraclavicular lymph nodes play a significant role in the lymphatic drainage of the head, neck, and upper extremities. The correct choice identifies the watersheds that are critical in understanding the tributary region for these lymph nodes.

The clavicular watershed and the spine of the scapula watershed form important boundaries that help delineate where lymphatic fluid drains from various anatomical regions into the supraclavicular nodes. The clavicular watershed specifically refers to the anatomical region near the clavicle where lymphatic flow can be divided, while the spine of the scapula watershed serves a similar purpose but at a more posterior aspect, helping to manage lymphatic drainage from the upper back and shoulder areas.

This understanding is crucial for lymphatic therapists and health professionals working with patients who may have conditions affecting lymphatic drainage, such as lymphedema or cancers that can metastasize through the lymphatic system.