A 23 year old man undergoes an orchidectomy. The right testicular vein is ligated; into which structure does it drain?
Right renal vein
Inferior vena cava
Common iliac vein
Internal iliac vein
External iliac vein
The testicular venous drainage begins in the septa and these veins together with those of the tunica vasculosa converge on the posterior border of the testis as the pampiniform plexus. The pampiniform plexus drains to the testicular vein. The left testicular vein drains into the left renal vein. The right testicular vein drains into the inferior vena cava.
Scrotal and testicular anatomy
Formed by the vas deferens and is covered by the following structures:
Internal spermatic fascia
From the fascial coverings of internal oblique
External spermatic fascia
External oblique aponeurosis
Contents of the cord
Transmits sperm and accessory gland secretions
Branch of abdominal aorta supplies testis and epididymis
Artery of vas deferens
Arises from inferior vesical artery
Arises from inferior epigastic artery
Venous plexus, drains into right or left testicular vein
Sympathetic nerve fibres
Lie on arteries, the parasympathetic fibres lie on the vas
Genital branch of the genitofemoral nerve
Drain to lumbar and para-aortic nodes
- Composed of skin and closely attached dartos fascia.
- Arterial supply from the anterior and posterior scrotal arteries
- Lymphatic drainage to the inguinal lymph nodes
- Parietal layer of the tunica vaginalis is the innermost layer
- The testes are surrounded by the tunica vaginalis (closed peritoneal sac). The parietal layer of the tunica vaginalis adjacent to the internal spermatic fascia.
- The testicular arteries arise from the aorta immediately inferiorly to the renal arteries.
- The pampiniform plexus drains into the testicular veins, the left drains into the left renal vein and the right into the inferior vena cava.
- Lymphatic drainage is to the para-aortic nodes.