spiral artery

(redirected from coiled artery of the uterus)

spi·ral ar·ter·y

one of the corkscrewlike arteries in premenstrual or progestational endometrium.

spiral artery

spiral artery

The coiled terminal branch of a uterine artery. It supplies the superficial two thirds of the endometrium, and, in a pregnant uterus, it empties into intervillous spaces, supplying blood that bathes the chorionic villi at the placental site.
Synonym: coiled artery
See also: artery