The appendix of the testis (hydatid of Morgagni) is a remnant of which embryological structure?

• A Mesonephric (Wolffian) duct
• B Gubernaculum testis
• C Urogenital ridge
• D Paramesonephric (Müllerian) duct ✓

Explanation

The appendix testis (hydatid of Morgagni, testicular) is a vestigial remnant of the paramesonephric (Müllerian) duct at the upper pole of the testis. It can undergo torsion, presenting with sudden scrotal pain in prepubertal boys (a key differential from testicular torsion — a 'blue dot' sign on transillumination). The appendix epididymis is a Wolffian (mesonephric) duct remnant. In females, the Müllerian duct forms the fallopian tubes, uterus, cervix, and upper vagina.

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

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

Written and medically reviewed by the StethoPrep medical team.