Final answer:
Anuria is a condition where the kidneys do not produce urine, which can occur because of acute renal failure or nephritis. While kidney function is impaired, the urinary bladder may still function normally, allowing stored urine to be expelled.
Step-by-step explanation:
Understanding Anuria and Urinary System Functioning
When the kidneys are unable to produce urine, a condition known as anuria can occur. Anuria can develop due to acute renal failure or nephritis. Despite the kidneys not producing urine, the urinary bladder may still retain the ability to empty itself through the processes of sphincter relaxation and urination.
The kidneys serve vital roles in filtering the blood and maintaining homeostasis, including the balance of water, electrolytes, and removal of wastes. If kidney function is impaired, serious health complications such as anemia, edema, metabolic acidosis, and heart arrhythmias may arise.
The urinary system, including the ureters, bladder, and urethra, works together to store and excrete urine. Urine is moved from the kidneys to the bladder via peristalsis, and the bladder has stretch receptors that signal when it is time to urinate. Although the kidneys may not function properly, the ability to urinate is controlled by the nervous system and incorporates voluntary control over the opening of sphincters, allowing the stored urine to be expelled.