Background: meridian theory is a diamond of the Chinese culture. Moreover, therapy of acupuncture is a miracle of Chinese traditional medicine. How to explain the transmit sense phenomena alone meridian? It is still not system and believable experimental proof. Our studies try to discover the secret of acupuncture point and meridian. Bused on these backgrounds, this thesis is the further exploration of the morphologic and neurobiological mechanisms of acupuncture point and meridian. Method: Using CB-HRP antidromic tracing techniques, the distributions of motoneuron innervating the muscles of liver meridian and kidney in spinal anterior horn were investigated and the dendritic projections between the motoneuron of homo-meridian were observed. At another hand, to research the distributions of rectus abdominis motor neurons in spinal anterior and their dendritic projections. Result: 1. The motoneuron labeled CB-HRP of liver meridian and kidney meridian form a cell column and there were widely mutual dendritic projections. The labeled motorneuron of meridian is 7.0 ±0.5 mm long in L2 to L5 spinal cord and their percentage were 71.6%. The motoneurons labeled CB-HRP of kidney meridian were found in T8 to T2 and L3 to S2 spinal cord, 10.6 + 0.6 mm long and 4.1±0.8mm long respectively. The percentage of the dendritic projection to total dendritic is 75.6%. In transverse sections, the labeled motoneuron were distributed anterionlateral nucleus L1 to L5 spinal card and the mutual dendritic extend to lateral horn. The kidney meridian were focused on Tg to T12 and L3 to S2 spinal cord and their mutual dendritic extent to lateral horn, especially in T8 to T12. Furthermore, a great number of label motoneurons were found in gray commissure posterior horn and intemediate zone. 2. Motor neurons labeled CB-HRP of kidney meridian distributed in T7 to T12 spinal cord, 10.8 ±0.5 mm long, which focuses on T8 to T10. motoneuron form an cell column and rich in dendritic projection. The percentage of their dendritic projection to total ones... |