The testicular arteries (also known as the internal spermatic arteries, Latin: sg. arteria testicularis) is a paired anterior branch of the abdominal aorta that supplies the testis in males.
These vessels are the male equivalent of the ovarian arteries.
The testicular arteries arise below the origin of the renal arteries and pass downward and laterally on the anterior surface of the psoas major muscle. The right testicular artery lies anterior to the inferior vena cava and posterior to the middle colic artery and ileocolic artery, and the terminal part of the ileum. The left - behind the left colic artery and the sigmoid arteries and the iliac colon.
Each testicular artery passes obliquely over the ureter and the lower part of the external iliac artery to reach the abdominal inguinal ring. It passes through it and accompanies the other structures that travel within the spermatic cord along the inguinal canal to reach the scrotum. Here the testicular artery divides into several branches. Two or three of these branches travel along the ductus deferens to supply the epididymis, and they form anastomoses with the artery of the ductus deferens. Other branches of the testicular artery pierce the back part of the tunica albuginea and supply the substance of the testis.
Each testicular artery also gives rise to one or two small branches to the ureter, and in the inguinal canal gives off one or two branches to the cremaster.