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Biology 20 Online
OpenStudy (anonymous):

What prevents the backflow of urine from the urinary bladder to the kidneys? peristaltic action of muscles of the ureters peristaltic action of muscles of the kidneys pulling action of the force of gravity

OpenStudy (anonymous):

@Love_Ranaa hello are u able to help

OpenStudy (love_ranaa):

peristaltic action of muscles of the kidneys

OpenStudy (anonymous):

thank u i thought it was B. but u never know got to ask a smart person lol

OpenStudy (love_ranaa):

:)

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