Multiple choice

As the ureters pass obliquely through the bladder wall, their openings get shut. Why?

  1. Due to the compression of contracting bladder muscles to prevent the backward flow of urine

  2. Due to the contraction of abdominal cavity to prevent the loss of excess salts and proteins

  3. Due to the contraction of urethral orifice to prevent the excretion of useful vitamins and minerals

  4. Due to the contraction of sphincter muscles of bladder to prevent the loss of hormonal secretion and antibodies

  5. Due to the compression of collecting tube to maintain osmoregulation
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A Correct answer
Explanation

As the ureters pass obliquely through the bladder wall, their openings get shut due to compression of the contracting bladder muscles to prevent the backward flow of urine.

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