Side effects include decreased libido and ejaculatory or erectile dysfunction. Sperm is produced in the testes and enters the ejaculatory ducts via the vas deferens. It carries the spermatozoa from the epididymis to ejaculatory duct. SD in men encompasses both erectile and ejaculatory disorder. Loss of or decreased response to sexual stimuli and ejaculatory anhedonia are also reported. A method to treat ejaculatory duct obstruction is transurethral resection of the ejaculatory ducts (TURED). Copulation lasts about 45 seconds and does not involve pelvic thrusting or ejaculatory pause. A short period of ejaculatory abstinence before intrauterine insemination is associated with higher pregnancy rates. The sperm and ejaculatory fluids diffuse through the female's hemolymph. Another underlying cause for this phenomenon may be ejaculatory duct obstruction. The courtship is brief, consisting of a penetration and one ejaculatory thrust. The nucleus paragigantocellularis of the brain has been identified as having involvement in ejaculatory control. Ejaculatory prayer is the use of very brief exclamations. Ejaculatory delay typically begins within a week of beginning medication. Ejaculatory control issues have been documented for more than 1,500 years.