TH2 (Upper Back)
TH2 is the second thoracic vertebra of the upper back. TH2 nerves affect the chest, arms, and hands.
• Meridians: heart meridian (yin), small Intestine meridian (yang)
• Connections: blood vessel, chest, lungs, parotid, carotid
• Possible problems: coronary arteries, disruption in thymus, fears, chest pain, functional heart conditions and certain chest pains, including its valves and covering