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COMPARISON OF SENSORY INNERVATION IN DIFFERENT PARTS OF COLON IN CATS BY USING HRP

Bian Guanhe Li Zeshan Wang Shaomei Wang Juan Sun Ping (Department of Anatomy,Jinzhou Medical College)  
The sensory innervation in the different parts of colon was studied in 36 cats.The results are as follows: 1.The sensory innervation in the differnt parts of colon of cats arises from the spinal ganglia and inferior vagus ganglia.The sensory neurons distributed in the different parts of colon are in spinal ganglia regularly.The sensory innervation in the ascending colon of cats arises from T_5-L_5 and S_(2-3) spinal ganglia bilaterally.It's mainly in T_(12) -L_2 spinal ganglia with the preponderance of the right side over the le- ft.The sensory innervation in the transverse colon of cats arises from T_8-L_5 and L_7-S_3 spinal ganglia bilaterally.It's mainly in T_(13)-T_4 spinal ganglia with equality between the sides.The descending colon receives the innervation from T_(13)-L_5 and L_7-C_(01) spinal ganglia bilaterally but the left side predominates the right.The great parts of innervation are from L_(3-4) and S_(1-2) spinal ganglia. 2.The number of middle and small sized labelled cells is much mo- re than that of the large ones in the spinal ganglia and inferior vagus ganglia.The labelled cells are oval or circular in shape and are distri- buted disperively in the whole ganglia.
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