Question

failure of fusion of the urethra on the ventral surface of the penis is known as:
hypospadias
phimosis
hydronephrosis
epispadias

Explanation:

To solve this, we analyze each option:

• Hypospadias: Defined as the failure of fusion of the urethra on the ventral (underside) surface of the penis, matching the question.
• Phimosis: Is the inability to retract the foreskin, unrelated to urethral fusion.
• Hydronephrosis: Refers to the swelling of the kidney due to urine buildup, not related to penile urethra.
• Epispadias: Involves urethral opening on the dorsal (upper) surface of the penis, not ventral.

Answer:

A. Hypospadias