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Human Excretion

Human Excretion. Breathing. What do we get rid of with the respiratory system? CO 2 H 2 O Excess heat. The Liver. -breaks down red blood cells Recycles usable materials Produces urea following amino acid deamination (nitrogen break down). Sweat Glands.

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Human Excretion

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  1. Human Excretion

  2. Breathing • What do we get rid of with the respiratory system? • CO2 • H2O • Excess heat

  3. The Liver • -breaks down red blood cells • Recycles usable materials • Produces urea following amino acid deamination (nitrogen break down)

  4. Sweat Glands • Water, salts, and some urea diffuse from blood • Excreted in perspiration (used for temperature regulation) • Sweat is 98% H2O and 2% salt and urea

  5. Urinary System • Kidneys • Excretion of most of urea made in cells • Control concentration of most constituents of body fluid

  6. Kidney • Nephrons • Filter and reabsorb blood • Glomerulus • Filters water, salts, urea, amino acids and glucose into Bowman’s Capsule • As materials move through the tubule of nephron water, minerals, and digestion end products are reabsorbed • Urine is what is left and then leaves the kidneys through ureters to the urinary bladder

  7. Urinary Bladder • Store urine until is eliminated or expelled through the ureturs to the urinary bladder

  8. Malfunctions • Kidney disease: Malfunction of the kidney or nephron • Gout: inflammation in the joints associated with uric acid production and depostion.

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