Which artery originates from the internal iliac artery and feeds the epididymis and vas deferens, with high resistance (RI > 0.75)?

Which artery originates from the internal iliac artery and feeds the epididymis and vas deferens, with high resistance (RI > 0.75)?

• A. Cremasteric Artery
• B. Deferential Artery
• C. Centripetal Arteries
• D. Capsular Artery

Answer: (B)

This artery is the deferential artery. It travels with the vas deferens and supplies both the vas deferens and the epididymis, and it originates from the superior vesical artery, a branch of the internal iliac artery. The Doppler pattern you’d expect for it is high resistance (RI typically > 0.75) because it’s a muscular vessel feeding a relatively small, ductal/epithelial bed, not a large, low-resistance venous-like vascular bed. Understanding the alternative sources helps confirm this: the cremasteric artery comes from the inferior epigastric (external iliac) and supplies the cremaster muscle and scrotal wall; the capsular and centripetal arteries are intratesticular branches primarily associated with the testicular artery rather than the internal iliac system.

This artery is the deferential artery. It travels with the vas deferens and supplies both the vas deferens and the epididymis, and it originates from the superior vesical artery, a branch of the internal iliac artery. The Doppler pattern you’d expect for it is high resistance (RI typically > 0.75) because it’s a muscular vessel feeding a relatively small, ductal/epithelial bed, not a large, low-resistance venous-like vascular bed.

Understanding the alternative sources helps confirm this: the cremasteric artery comes from the inferior epigastric (external iliac) and supplies the cremaster muscle and scrotal wall; the capsular and centripetal arteries are intratesticular branches primarily associated with the testicular artery rather than the internal iliac system.