Question

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 1

Answer: the angle of the ureter

Explanation: I took the test

Answer 2

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.

Step-by-step explanation: