What is the correct sequence of organs for the formation and elimination of urine?[Fill in the blank]

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BlackTom AI · Accepted Answer

To answer this question, we must trace the correct flow of urine from its formation to elimination. 
Option a: 'Urethra, bladder, kidney, ureter' starts at the exit pathway and then jumps back to the kidney, which is not logical for formation and elimination. This order incorrectly places the urethra first, before urine is formed or stored. 
Option b: 'Kidney, ureter, bladder, urethra' presents the physiologic transport sequence: urine is produced in the kidneys, travels down the ureters to the bladder, where it is stored, and finally exits via the urethra. This aligns with the known biological pathway of urine excretion. 
Option c: 'Kidney, urethra, bladder, ureter' would imply urine moves from the kidney directly into the urethra before passing through the bladder and before reaching the ureter, which contradicts the anatomical arrangement and normal flow. 
Option d: 'Bladder, urethra, kidney, ureter' starts with the bladder and urethra, skipping the formation site entirely and then loops back to the kidney and ureter, which is not a plausible sequence for urine formation and elimination. 
Option e: 'Kidney, bladder, ureter, urethra' places the ureter after the bladder, implying urine would move from the kidney to the bladder, then to the ureter, which is anatomically incorrect since urine travels from the kidney to the bladder via the ureter, not the other way around. 
In summary, the only option that follows the correct physiological order from formation to elimination is the sequence that begins with the kidney, then the ureter, then the bladder, and finally the urethra. This aligns with the established pathway of urine flow in the urinary system.

What is the correct sequence of organs for the formation and elimination of urine?[Fill in the blank]

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