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  1. In Mammal urinary bladder open into

    2. A.

     Uterus
    B.

     Urethra
    C.

     Vestibule
    D.

     Ureter

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    Answer : Option B

    Explanation :

    The bladder has three openings. The two ureters enter the bladder at ureteric orifices, and the urethra enters at the trigone of the bladder.

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