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  • Choose the incorrect statement  Option: 1 Urinary bladder is situated in the pelvic cav

Choose the incorrect statement

 

Option: 1

Urinary bladder is situated in the pelvic cavity

 


Option: 2

The area where the bladder and urethra join contains internal sphincter formed by the modification of the longitudinal muscles. 

 


Option: 3

Internal sphincter allows urine into the bladder but prevents reflux of urine from the bladder back into the ureter.

 


Option: 4

None of the above is incorrect

 


Answers (1)

best_answer

 

 

Urinary Bladder -

  • It is situated in the pelvic cavity and is lined with the transitional epithelium.
  • The bladder is partially retroperitoneal (outside the peritoneal cavity) with its peritoneal-covered “dome” projecting into the abdomen when the bladder is distended with urine.
  • The muscular layer of the urinary bladder is called the detrusor muscle.
  • The detrusor muscle is made up of three layers of smooth muscles as inner and outer layers of longitudinal fibres and middle layer of circular fibres.
  • The area where the bladder and urethra join contains internal sphincter formed by the modification of the circular muscles. 
  • It allows urine into the bladder but prevents reflux of urine from the bladder back into the ureter.
  • Internally, the bladder has a triangular area called the trigone formed by three openings - two openings through which the ureters open into the bladder and one opening through which the urethra leaves the bladder.

 

Hence, the correct option is The area where the bladder and urethra join contains internal sphincter formed by the modification of the circular muscles. 

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manish

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