Decode Biology with Saiqa

12/08/2026

Part 1/100

11/08/2026

🩺 Human Urinary System — Quick Revision 💧

🫘 Kidneys: Filter blood and produce urine.
🧪 Nephron: Functional unit of the kidney.
➡️ Ureters: Carry urine to the bladder.
🫧 Urinary Bladder: Stores urine temporarily.
🚻 Urethra: Expels urine from the body.

⚖️ Key Functions
• Removes nitrogenous wastes
• Maintains water & electrolyte balance
• Regulates blood pH
• Helps regulate blood pressure
• Produces erythropoietin (RBC formation)
• Activates Vitamin D

📍 Urine Pathway:
Kidney → Ureter → Urinary Bladder → Urethra

💡 Mnemonic: KUBU = Kidney → Ureter → Bladder → Urethra

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