Langenfeld M, Pastea E
Anat Anz. 1976;139(5):505-10.
On 16 specimens of sheep of either sex the connections of the lumbo-sacral portion of the synpathetic trunk and of the spinal cord with the pelvic plexus were investigated bilaterally. On the basis of the studies it was found that the sympathetic branches proceed from the ganglia L3-L7 and S1-S4 of the sympathetic trunk, including in the lumbar portion 62.5% from L3-L6, 18.7% from L3-L5, 12.5% from L4-L6 and 6.2% from L4-L7, while in the sacral portion 56.2% from S1-S4, 31.2% from S2-S4 and 12.5% from S1S2S4. The parasympathetic branches proceed from the abdominal branches of the sacral spinal nerves (n. pudendus et n. haemorrhoidalis, fig. 3) at the height of S2-S4, including 75% from S3-S4 and 25% from S2S3S4.
对16只不同性别的绵羊标本双侧研究了交感干腰段和骶段以及脊髓与盆丛的连接。基于这些研究发现，交感神经分支发自交感干的L3 - L7节和S1 - S4节，其中在腰段，62.5%发自L3 - L6，18.7%发自L3 - L5，12.5%发自L4 - L6，6.2%发自L4 - L7；而在骶段，56.2%发自S1 - S4，31.2%发自S2 - S4，12.5%发自S1S2S4。副交感神经分支发自骶脊神经的腹侧支（阴部神经和痔下神经，图3），位于S2 - S4水平，其中75%发自S3 - S4，25%发自S2S3S4。
