Ask your own question, for FREE!
MIT 21F Spanish I - IV (OCW) 13 Online
OpenStudy (anonymous):

What prevents the backflow of urine from the urinary bladder to the kidneys?

OpenStudy (theraggedydoctor):

o.0 This is Spanish.. not whatever subject that's meant for.

OpenStudy (anonymous):

lol I realized that after I did it :p

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!