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O Level Biology Competitive Exam: Certification Test 359

Body Muscles MCQ App & e-Book: MCQ 359

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MCQ: 359

The purpose of the sphincter muscle is to

  1. allow the urine to flow in ureter
  2. hold urine in bladder
  3. relax and allow the urine to flow
  4. connect urine to urethra

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O Level Biology MCQ App (Android & iOS)

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