They are arteries and veins that branch from the uterine arteries and veins, respectively, with additional anastomoses from the ovarian arteries and veins, and penetrate and assume a circumferential course in the myometrium.
They are arteries and veins that diverge from the uterine arteries and veins, respectively, with additional connections from the ovarian arteries and veins, and penetrate and follow a circumferential path in the myometrium.