The triangular region of the internal urinary bladder formed by the opening of the ureter and the urethra is known as

Digone

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Trigone

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Tetragone

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Pentagone

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Solution

The correct option is B Trigone
Trigone is the smooth triangular region of the internal urinary bladder formed by two urethral orifices (openings) and the internal urethral orifice (opening). The area is very sensitive to expansion and once stretched to a certain degree, the urinary bladder signals the brain of its need to empty.

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Choose the correct path of urine in our body

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(d) urethra

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(b) ureter
(c) urinary bladder
(d) urethra

Q. The opening of the bladder into the urethra is guarded by ______.

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Standard XII Biology

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