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UPSC-CMS 2016 — Anatomy

Q: Defective fusion of the Mullerian ducts may give rise to which of the following?

Uterus bicornis unicollis. ***Uterus bicornis unicollis*** - This condition results from the **incomplete fusion** of the two Müllerian ducts, leading to a uterus with a **septum** or two distinct uterine cavities but a single cervix and vagina. - The Müllerian ducts are embryological structures that develop into the **female reproductive tract**, including the uterus, fallopian tubes, cervix, and upper two-thirds of the vagina. *Imperforate anus* - This congenital condition is due to the **failure of the anal membrane to rupture** during development, not related to Müllerian duct fusion. - It affects the **gastrointestinal tract** and is not derived from Müllerian structures. *Absence of the ovaries* - The **ovaries** develop from the **gonadal ridges** and are distinct from the Müllerian ducts; therefore, their absence is not due to defective Müllerian fusion. - Conditions like **gonadal dysgenesis** can lead to absent or streak ovaries. *Imperforate hymen* - An imperforate hymen results from the failure of the **hymen to canalize** during fetal development, leading to an obstruction of the vaginal introitus. - The hymen is formed from the **urogenital sinus**, which is embryologically distinct from the Müllerian ducts. [Practice more Anatomy PYQs on OnCourse]

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All Subjects Anatomy (1)Community Medicine (34)ENT (1)Internal Medicine (7)Microbiology (3)Obstetrics and Gynecology (34)Orthopaedics (2)Pathology (4)Pediatrics (1)Pharmacology (2)Physiology (1)Psychiatry (1)Radiology (2)Surgery (21)

Defective fusion of the Mullerian ducts may give rise to which of the following?