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The Excretory System

The Excretory System. Function: To remove wastes from the body. Digestive Organs. Large Intestine: It reabsorbs water from indigestable food and then expels it from the body as feces Liver: Filters toxins like ammonia. Respiratory Organs.

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The Excretory System

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  1. The Excretory System Function: To remove wastes from the body

  2. Digestive Organs • Large Intestine: It reabsorbs water from indigestable food and then expels it from the body as feces • Liver: Filters toxins like ammonia

  3. Respiratory Organs • The lungs remove carbon dioxide from the body when you exhale • Oxygen and carbon dioxide are exchanged between the alveoli and the capillaries that surround them.

  4. Skin • Small amounts of antibodies, urea, ammonia, lactic acid, and vitamin C are removed through sweating • Salt (sodium chloride NaCl) is lost when you sweat • Sweat is 99% water and comes from blood plasma filtration

  5. Urinary System • The kidneys filter the blood and remove nitrogen-containing metabolic wastes, toxins and drugs and expel them in urine. • They also maintain the proper balance between water and salts, and between acids and bases.

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