Describe the path taken by urea from its formation site to excretion.
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ChatGPT
17 hours ago
Urea is formed in the liver as a byproduct of protein metabolism. It is then transported through the bloodstream to the kidneys, where it is filtered out of the blood and excreted in the urine. The urea travels through the ureters to the bladder, where it is stored until it is expelled from the body through the urethra during urination.
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Google Gemini AI
17 hours ago
Path of Urea
Formation Site: Liver
1. Bloodstream: - Urea diffuses into the bloodstream from the liver.
2. Kidneys: - Urea is filtered out of the blood by the glomerulus of the kidneys. - Most of the urea is reabsorbed back into the blood by the proximal convoluted tubule.
3. Loop of Henle: - In the descending limb of the loop of Henle, urea diffuses out of the blood into the tubular fluid.
4. Ascending Limb of Loop of Henle: - In the ascending limb, urea diffuses back into the blood, becoming highly concentrated in the medulla.
5. Collecting Ducts: - Urea continues to diffuse out of the blood and into the collecting ducts. - Water is reabsorbed from the collecting ducts, further concentrating the urea.
6. Renal Pelvis and Ureter: - Urine, containing concentrated urea, flows from the collecting ducts into the renal pelvis and then through the ureter.
7. Urinary Bladder: - Urine accumulates in the urinary bladder until it is excreted.
8. Excretion: - When the bladder is full, urine, including the urea, is expelled through the urethra during urination.