Fifth, we can anatomize meridians
To explain the anatomical distribution space of acupoints, let’s take the approach of Mingmen(DU4)(Fig.2) acupoint position in the Dumai connective tissues as example. It is located in the posterior midline, in the depression of second lumbar spinous process. The path for reaching the acupoint is as follows: sequentially through the skin, subcutaneous superficial fascia, supraspinous ligament, stopping in the interspinous ligaments. The entire depth of the acupuncture into the acupoint is between 1-2 centimeters.
Neiguan(PC6) acupoint, belonging to the hand Jueyin Pericardium meridian, is in the middle of the volar forearm median, 3.0 centimeters upward wrist rasceta between the palmaris longus tendon and flexor carpi radialis tendon. It penetrates from the skin and into the subcutaneous tissue; passes through flexor carpi radialis muscle and tendon palmaris longus; passes ulnar side of the median nerve and median artery; crosses flexor digitorum superficialis, flexor digitorum profundus and pronator quadratus muscle; finally it stops at radial and ulnar interosseous membrane. Three connective-tissue-rich regions containing nerves and blood vessels in Neiguan acupoint from shallow, medium to deep, are effective stimulation area. Acupuncture or traction nerve vascular connective tissue membrane produces a feeling of Deqi[13].