Final answer:
The ejaculatory process in males is regulated by testosterone, androgens, and inhibin, but not by prolactin, which is primarily involved in female reproductive functions like milk production. Therefore, the correct option is 4) prolactin.
Step-by-step explanation:
The question pertains to the ejaculation process and the hormonal control over it. The factors that are controlled by the ejaculation process include testosterone, a hormone secreted by Leydig cells under the control of luteinizing hormone (LH) from the pituitary gland, and androgens, which include testosterone and other male sex hormones responsible for male traits and reproductive activity. Oxytocin and prolactin are hormones involved in female reproductive functions, with oxytocin playing a role in uterine contractions and milk let-down, and prolactin being central to milk production post-childbirth.
Throughout the reproductive system, the gonadotropins follicle-stimulating hormone (FSH) and LH, produced by the pituitary gland, play key roles. FSH is involved in the maturation of sperm, while LH stimulates the production of testosterone. Sperm production is regulated by a negative feedback system involving the hormones testosterone and inhibin, which work to maintain an adequate level of sperm production.
After analyzing these factors, it is clear that testosterone, androgens, and inhibin are all involved in the male ejaculatory and reproductive process, while prolactin is not. Therefore, the factor not controlled by the ejaculatory process is option 4) prolactin.