Q.

The correct path of urine flow in our body is :

1 Kidney  Ureter  Urethra  Urinary bladder  
2 Kidney  Urinary bladder  Urethra  Ureter  
3 Kidney  Ureter  Urinary bladder  Urethra  
4 Urinary bladder  Kidney  Ureter  Urethra  

Ans.

(3)

Urine from the nephron is transported to the collecting duct, where it enters the ureters. Ureters open from kidney into the urinary bladder. The urinary bladder holds urine, and as the volume of urine collected increases, so does the size of the bladder. When the CNS sends a voluntary message to the bladder, the bladder muscles contract and the bladder sphincter relaxes, allowing urine to pass through the urethra.