Histologically, the tube is lined by a complex mucosa composed of two primary cell types: ciliated cells and secretory cells. The ciliated cells beat in coordinated waves toward the uterus, propelling the egg or embryo along its journey. The secretory cells nourish the gamete and the early zygote with a specialized fluid rich in glycogen and growth factors. This delicate environment is strictly regulated by hormones; estrogen increases ciliary beat frequency and secretion, while progesterone modulates these effects.
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Menstruation is a biological reality for approximately 1.8 billion people globally. Despite this, menstrual hygiene management (MHM) continues to be plagued by issues of accessibility, affordability, and environmental sustainability. Traditional disposable products (sanitary pads and tampons) contribute significantly to global plastic waste, while reusable options like menstrual cups, though effective, often face barriers to adoption due to cultural stigma, learning curves, and high upfront costs. Histologically, the tube is lined by a complex