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The reproductive system ensures the survival of the species. Other systems in the body, such as the endocrine and urinary systems, work continuously to maintain homeostasis for the survival of the individual. An individual may live a long, healthy, and happy life without producing offspring, but if the species is to continue, at least some individuals must produce offspring.
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The infundibulum, which has fimbriae and is positioned next to the ovary, the ampulla, the isthmus, and the pars interstitialis are the segments of the oviduct. The first two of these sections have a distinct appearance, with an intricate mucosa that is folded into several branched folds and bordered by a thin layer of smooth muscle. These folds get smaller as the tube advances away from the ovary and toward the uterus, and the smooth muscle takes over.