Home » The total number of orifices for outgoing and incoming of urine through the bladder is Excretory System MCQs The total number of orifices for outgoing and incoming of urine through the bladder is January 24, 2022 52 Views Q. The total number of orifices for outgoing and incoming of urine through the bladder is A. 2 B. 3 C. 4 D. 5 Answer: 3