Question:
An organ with sphincters at its origin is
An organ with sphincters at its origin is
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Control of urination = Urethral sphincters
Internal (involuntary) + External (voluntary)
Updated On: May 8, 2026
- urinary bladder
- urethra
- ureter
- renal pelvic
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Concept: Sphincters are circular muscles that regulate the passage of substances by opening and closing specific body openings.
• In the urinary system, control of urine flow is regulated by sphincter muscles.
• Two sphincters are associated with the urethra:
• Internal urethral sphincter (involuntary)
• External urethral sphincter (voluntary)
Step 1: Understand the question.
We need to identify the organ whose origin is guarded by sphincters.
Step 2: Analyze each option.
• (A) Urinary bladder: Has sphincter at outlet, not origin
• (B) Urethra: Begins at bladder and its opening is controlled by sphincters
• (C) Ureter: No sphincter at origin
• (D) Renal pelvis: No sphincter
Step 3: Conclusion.
Urethra is the organ whose opening is regulated by sphincters. Final Answer: Option (B)
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