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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.
Cervix slide

The cervix lies at the base of the uterus and serves to protect it from bacterial infiltration. It is the site of an important epithelial transition. The upper cervix (endocervix) is lined by a simple columnar epithelium that contains mucous-secreting cells. In contrast, the lower cervix (ectocervix) is lined by a stratified squamous epithelium. The transition point between these two epithelia is known as the external os. Note how the underlying layers of the cervix are composed primarily of collagenous and elastic connective tissue rather than smooth muscle fibers.
Reference:
Female Reproductive System Lab. (n.d.). http://Medcell.Med.Yale.Edu/. Retrieved May 27, 2022, from http://medcell.med.yale.edu/systems_cell_biology/female_reproductive_system_lab.php
INTEGRIS Health. (n.d.). Everything You Need to Know About Your Cervix. Retrieved May 27, 2022, from https://integrisok.com/resources/on-your-health/2019/may/everything-you-need-to-know-about-your-cervix