The uterine artery separates into two terminal branches, ramus tubarius (to the tube) and ramus ovaricus (to the ovary). The branches anastomose in the uterine tissue with the collateral branches and form rich networks in the muscular and mucous coats and develop particularly in pregnancy. The uterus is drained of blood by veins which form the uterine plexus. From this plexus the blood flows in three directions: (1) from the ovary, tube, and upper part of the uterus into the ovarian vein; (2) from the lower half of the uterine body and upper portion of the neck into the uterine vein;ICD 10 Coding will teach all these.