Lymphatic drainage of the testis differs from that of the scrotum. Testicular lymphatics drain to which node group, reflecting its embryological origin?

• A Superficial inguinal lymph nodes
• B Deep inguinal lymph nodes
• C Para-aortic (lumbar) lymph nodes at L1–L2 level ✓
• D External iliac lymph nodes

Explanation

The testis develops in the retroperitoneum near the kidney and descends into the scrotum; its lymphatic drainage follows its vascular supply (testicular vessels) back to the para-aortic (lumbar) lymph nodes at the level of L1–L2. In contrast, the scrotum (an ectodermal derivative in the perineum) drains to the superficial inguinal lymph nodes. This distinction is critical clinically: testicular tumors metastasize to para-aortic nodes (not inguinal), while scrotal skin carcinoma would spread to inguinal nodes.

Reference: BD Chaurasia's Human Anatomy, 8th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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