The lung meridian controls breath and energy, and assists the heart with blood circulation. Emotionally, this meridian is believed to be responsible for self-preservation and self-protection. Negative emotions associated with the lung meridian are grief, despair, shame, and sorrow. Its positive attributes include dignity, integrity, and high self-esteem.
Altogether, there are 11 points on the lung meridian. The meridian begins deep in the solar plexus region (middle burner) and descends to meet the large intestine. Winding up past the stomach, it crosses the diaphragm, divides, and enters the lungs. It then re-unites, passes up the middle of the windpipe to the throat and divides again, surfacing in the hollow region near the front of the shoulder (LU-1).
From here, it passes over the shoulder and down the anterior (front) aspect of the arm along the outer border of the biceps muscle. It reaches the outside of the biceps tendon in the elbow crease (LU-5), and continues down the forearm to the wrist just above the base of the thumb (LU-9). The channel crosses the height of the thumb muscle to finish at the corner of the thumbnail.