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1. An autonomic nerve plexus that is an extension of the inferior hypogastric plexus; it supplies nerves to the bladder muscles and, in males, to the seminal vesicles and the ductus deferens.
2. A venous plexus surrounding and draining blood from the upper part of the urethra and the neck of the bladder. It empties, via vesical veins, into the internal iliac vein. In males, it connects to the prostatic plexus; in females, it connects to the vaginal plexus.
See also: plexus
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