The Lung Meridian originates in the middle portion of the body(Middle Jiao), and runs downwards connecting with the large intestine. It then turns and passes through the diaphragm to connect with the lungs. This meridian branches out from the axilla (armpit) and runs down the medial aspect of the upper arm where it crosses the elbow crease. It continues until it passes above the major artery of the wrist, and emerges at the tip of the thumb.
Another branch emerges from the back of the wrist and ends at the radial side of the tip of the index finger to connect with the Large Intestine Meridian.
The Lung Channel is a yin channel that consists of 11 points. This channel originates on the lateral chest, inferior to the acromial end of the clavicle and runs down the medial aspect of the upper arm where it crosses the cubital crease. It continues until it passes above the radial artery at the wrist, and emerges at the tip of the thumb.
It also has a connection with the Large Intestine Meridian on the 2nd digit. Due to the location of this channel it is considered to be useful in the treatment of localised upper limb conditions. In the treatment of musculoskeletal conditions the most commonly utilised points are generally LU5 at the elbow and LU7 and LU9 at the wrist.