Chorionic vessels

{{Short description|Blood vessels in fetoplacental circulation}}

File:Chorionic artery.png, with a chorionic artery labeled in .]]

Chorionic (plate) vessels, also fetal surface vessels{{cite web |last1=Wang |first1=Yuping |last2=Zhao |first2=Shuang |title=Placental Blood Circulation |url=https://www.ncbi.nlm.nih.gov/books/NBK53254/ |publisher=Morgan & Claypool Life Sciences |access-date=31 October 2022 |language=en |date=2010}} are blood vessels, including both arteries and veins, that carry blood through the chorion in the fetoplacental circulation.

Chorionic arteries branch off the umbilical artery, and supply the capillaries of the chorionic villi. Increased vasocontractility of chorionic arteries may contribute to preeclampsia.{{Cite journal | last1 = Benoit | first1 = C. | last2 = Zavecz | first2 = J. | last3 = Wang | first3 = Y. | title = Vasoreactivity of Chorionic Plate Arteries in Response to Vasoconstrictors Produced by Preeclamptic Placentas | doi = 10.1016/j.placenta.2006.09.002 | journal = Placenta | volume = 28 | pmc = 3070483 | issue = 5–6 | pages = 498–504 | year = 2007 | pmid = 17070574}}