<prompt> Batsons plexus of veins connects-Prostatic and vertebral venous plexusGastric and hepatic veinsUpper and lower esophageal plexusSuperior amd inferior rectal veins  <response>: Ans. is a i.e., Prostatic and vertebral venous plexus There is valveless communication between prostatic plexus and vertebral venous plexus Batson plexus through which prostatic carcinoma can spread to vertebral column and skull 