What is the concentrated mixture of wastes left in the tubules and subsequently excreted?

What is the concentrated mixture of wastes left in the tubules and subsequently excreted?

• A. Urinary bladder
• B. Urine
• C. Ureters
• D. Urethra

Answer: (B)

What forms after the kidneys concentrate wastes is urine. In the nephrons, filtrate from the blood passes through tubules where water and many useful substances are reabsorbed back into the bloodstream. What remains in the tubular fluid becomes more concentrated with wastes, turning into urine. This urine is then collected and moved to the urinary bladder for storage, and finally excreted through the urethra. The urinary bladder stores urine, the ureters transport it from the kidneys to the bladder, and the urethra is the exit route from the body.

What forms after the kidneys concentrate wastes is urine. In the nephrons, filtrate from the blood passes through tubules where water and many useful substances are reabsorbed back into the bloodstream. What remains in the tubular fluid becomes more concentrated with wastes, turning into urine. This urine is then collected and moved to the urinary bladder for storage, and finally excreted through the urethra. The urinary bladder stores urine, the ureters transport it from the kidneys to the bladder, and the urethra is the exit route from the body.