Editing Seminal vesicles (section)

==Function==
The seminal vesicles secrete a significant proportion of the fluid that ultimately becomes [[semen]].<ref name=GH2016>{{cite book |last1=Hall |first1=John E |title=Guyton and Hall textbook of medical physiology |date=2016 |publisher=Elsevier |location=Philadelphia |isbn=978-1-4557-7016-8 |edition=13th|section=Function of the seminal vesicles|page=1024}}</ref> Fluid is secreted from the ejaculatory ducts of the vesicles into the vas deferens and [[ejaculated]] through the urethra during the male [[Human sexual response cycle|sexual response]].<ref name="Smiths2019" />

About 70-85% of the seminal fluid in humans originates from the seminal vesicles.<ref name=kierszenbaum558>{{cite book |last1=Kierszenbaum |first1=Abraham L. |last2=Tres |first2=Laura |title=Histology and Cell Biology: An Introduction to Pathology |edition=3rd |year=2011 |publisher=Mosby |location=St. Louis [u.a.] |chapter=Chapter 21: Sperm Transport and Maturation |chapter-url=https://books.google.com/books?id=TFvZGAX8ItYC&pg=PT1483 |page=624 |isbn=978-0323078429}}</ref> The fluid consists of nutrients including [[fructose]] and [[citric acid]], [[prostaglandin]]s, and [[fibrinogen]].<ref name=GH2016 /> Fructose is not produced anywhere else in the body except in the seminal vesicles. It provides a forensic test in rape cases. 

Nutrients help support [[sperm]] until fertilisation occurs; prostaglandins may also assist by softening mucus of the [[cervix]], and by causing reverse contractions of parts of the [[female reproductive tract]] such as the [[fallopian tube]]s, to ensure that sperm are less likely to be expelled.<ref name="GH2016" />