Principles and practice of spinal adjustment; for the use of students and practitioners . hichsupply the prostate gland are derived from the pelvic plexus,through the medium of the prostatic plexus. The nerves com-posing this plexus are of large size. They are distributed tothe prostate gland, seminal vesicles, and erectile tissue of thepenis. The spinal nerves which have an influence on the prostategland are the following: 1. The lower thoracic spinal nerves, by their connectionwith the pelvic plexus have some influence upon the prostategland. 2. The lumbar nerves, however, have the most mark
Principles and practice of spinal adjustment; for the use of students and practitioners . hichsupply the prostate gland are derived from the pelvic plexus,through the medium of the prostatic plexus. The nerves com-posing this plexus are of large size. They are distributed tothe prostate gland, seminal vesicles, and erectile tissue of thepenis. The spinal nerves which have an influence on the prostategland are the following: 1. The lower thoracic spinal nerves, by their connectionwith the pelvic plexus have some influence upon the prostategland. 2. The lumbar nerves, however, have the most marked in-fluence upon this organ, and the nerves which most directlyinfluence it are the first and fifth lumbar. The Innervation of the Ovaries.—The nerves which sup-ply the ovary are derived from the pelvic plexus and fromthe ovarian plexus. The pelvic plexus has been previouslydescribed. The ovarian plexus is derived from the renalplexus, and is distributed to the ovaries and the fundus of theuterus. The spinal nerves that influence the ovaries are thefollowing: 160 SPINAL ADJUSTMENT. Fig. 35. Parts Influenced by the FifthLumbar Nerve. ORGANS OF THE PELVIS 161 1. The tenth, eleventh, and twelfth thoracic nerves formthe lesser and smallest splanchnics, which assist in the forma-tion of the renal plexus from which the ovarian plexus isderived. 2. The lumbar nerves, by their connection with the lum-bar ganglia which assist in the formation of the hypogastricplexus from which the pelvic and finally the ovarian plexusare derived, also influence the ovaries. The third lumbarnerve, especially, influences the ovaries. The Innervation of the Testicles.—The nerve-supply ofthe testicles is analogous to that of the ovaries. It is de-rived from the spermatic plexus which, like the ovarian plexus,is a branch of the renal plexus. It accompanies the spermaticvessels to the testes. The spinal nerves which influence the testes are the sameas those which influence the ovary. The Innervation of
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