Structure of The Urinary and Reproductive Systems ? Structure of the urinary tract remove waste the blood and excrete urine. ? Nephrons filter blood to form urine. Structure of the Female Reproductive System Ovaries, uterine tubes, uterus, vagina and external genitalia Microorganisms enter through the vagina. Structure of the Male Reproductive System ? Testes ? Scrotum ? System of ducts ? Accessory glands ? Penis Microbiome of the Urinary and Reproductive System • Some of bacteria by some microorganism include lactobacillus and staphylococcus. Male reproductive system • Region above the prostate is sterile