An empty bladder collapses into folds called ________.
A. orifices
B. pelves
C. rugae
D. sphincters
Answer:C
An empty bladder collapses into folds called ________.
A. orifices B. pelves C. rugae D. sphincters
Explanation: A) Orifices are the openings of the ureters where they enter the bladder.