Inhibin

The name for several protein hormones made by the ovaries. Inhibins regulate within the ovary and control the production of FSH. Inhibin B decreases early in perimenopause and is thought to be responsible for the endogenous perimenopausal ovarian hyperstimulation that may occur. OR a family of hormones made by the ovarian follicle and part of the control system for FSH levels and hence the menstrual cycle. Inhibin B decreases in the follicular phase early in perimenopause.