Principles and practice of spinal adjustment; for the use of students and practitioners . t are numerous, and containa large proportion of spinal nerve-fibres. They accompanythe vesical arteries, and are distributed at the side and baseof the bladder. Numerous filaments also pass to the seminalvesicles and vas deferens; those supplying the vas deferensunite with branches of the spermatic plexus on the spermaticcord. The spinal nerves which have the greatest influence on thebladder are the eleventh thoracic and the first lumbar. Thesenerves communicate with the vesical plexus by connectingwith
Principles and practice of spinal adjustment; for the use of students and practitioners . t are numerous, and containa large proportion of spinal nerve-fibres. They accompanythe vesical arteries, and are distributed at the side and baseof the bladder. Numerous filaments also pass to the seminalvesicles and vas deferens; those supplying the vas deferensunite with branches of the spermatic plexus on the spermaticcord. The spinal nerves which have the greatest influence on thebladder are the eleventh thoracic and the first lumbar. Thesenerves communicate with the vesical plexus by connectingwith the corresponding ganglia of the sympathetic, which sendinternal branches that communicate with the hypogastricplexus. The most marked efifect upon the bladder is obtained byadjustment of the first and fifth lumbar vertebrae. The Innervation of the Uterus.—The nerves to the uterusare derived from the inferior hypogastric and ovarian plexuses,and from the third and fourth sacral nerves. The uterineplexus which specifically supplies the uterus arises from the 157 158 SPINAL ADJUSTMENT. Parts Influenced by the FourthLumbar Nerve. ORGANS OF THE PELVIS 159 upper part of the pelvic plexus above the point where thebranches from the sacral nerves unite with that plexus. Itsbranches accompany the uterine arteries to the side of theorgan between the folds of the broad ligament, and are dis-tributed to the substance of the lower part of the body ofthe uterus and to the cervix. Branches from the uterineplexus also accompany the uterine arteries into the substanceof the organ, and have numerous ganglia developed uponthem. Other filaments pass separately to the fundus and theFallopian tubes. The following spinal nerves influence the uterus: 1. The lower thoracic nerves, through their communica-tion with the pelvic plexus have an influence on the uterus. 2. The lumbar nerves also influence the uterus by reasonof their communication directly with the hypogastric anduterine plexuses. The four
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