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].