This section is from the book "Anatomy Of The Arteries Of The Human Body", by John Hatch Power. Also available from Amazon: Anatomy of the Arteries of the Human Body, with the Descriptive Anatomy of the Heart.
The Uterine Artery proceeds to the superior and lateral parts of the vagina and beneath the bladder. Having supplied these parts, it ascends on the side of the uterus, between the folds of its broad ligament: here it divides into several branches, which penetrate its structure and spread in a tortuous manner on both its surfaces, to communicate with its fellow of the opposite side: some of them ascend to the round ligament, and Fallopian tubes, and anastomose with the spermatic arteries; and one or more of them descend on the vagina. These arteries are remarkable for the great tortuosity of all their branches, even the smallest; and this character they preserve when they become greatly enlarged, as in pregnancy.
* " Observations on the Structure and Diseases of the Testis," p. 33.
The Vaginal Artery is equal in size to the uterine in the young subject, but smaller than it after puberty. It descends on the side of the vagina, to which it distributes several branches. It also sends a branch to the bladder, and supplies the external organs of generation.