O Level Biology MCQs (O Level) From Textbook

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O Level Biology MCQs – Certification Test 359

Body Muscles MCQ (Question 359) – App & e-Book Download

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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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