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Biology

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Question 11 (1 point) What prevents backflow of urine into the kidneys? O
the internal urethral sphincter
the angle of the ureter
the external urethral sphincter
the mitral valve

Answer :

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Answer:

There is an internal urethral sphincter at the meeting point between each ureter and the bladder to prevent the backflow of urine into the kidneys.

Explanation:

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Answer: the angle of the ureter

Explanation: I took the test

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