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What liquid waste do we make?

Learn about the urinary system, kidney function, and the elimination of waste products in the body. Explore the roles of kidneys, ureters, bladder, urethra, and the skin in removing toxins. Discover how the body efficiently excretes waste to maintain homeostasis.

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What liquid waste do we make?

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  1. O || C—OH H N H What liquid waste do we make? • Digesting protein makes poison • nitrogen waste = ammonia = poison H | —C— | CO2 + H2O H NH2 = ammonia

  2. Nitrogen waste disposal • need to save H2O • evolved less poisonous waste product than ammonia • Ammonia  urea • excrete urea & H2O as urine

  3. Kidneys: Structure and Function • Filter the blood to remove wastes from it, regulate salt & water balance & maintain blood pH thus maintaining the homeostasis of body fluids • Located just above waist near back on both sides-vulnerable (redundant)

  4. Urinary sytem • Urine pathway: Kidney->Ureter->Urinary bladder->Urethra Ureters: Tubes that carry urine from kidneys to urinary bladder Urinary bladder: smooth muscle bag that stores urine Urethra: urine passes out of the body through this tube Kidney Ureter Bladder Urethra

  5. Nephron: The unit of the kidney • Microscopic functionalunit of kidney (approx. 1million per kidney) • Inverse concentration process

  6. Skin: largest excretory organ • The skin removes many contaminants • Sweat (sudoriferous) glands flush salts, urea, & lactic acid from blood • Sebaceous (oil) glands release lipids from blood

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