Final answer:
The prostate gland and seminal vesicles produce substances that stimulate peristaltic contractions in the female reproductive tract, aiding in the movement of spermatozoa and facilitating fertilization. They also stimulate uterine contractions during childbirth and milk ejection.
Step-by-step explanation:
The prostate gland and seminal vesicles produce substances that stimulate peristaltic contractions in the female reproductive tract. These contractions help to move spermatozoa and facilitate fertilization. Additionally, the substances produced by these glands can stimulate uterine contractions during childbirth and the ejection of milk.