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Chapter 17

Chapter 17. The Respiratory & Excretory Systems. Section 3: The Excretory System. The Excretory System Excretion (the removal process) The excretory system is the system in the body that collects wastes produced by cells and removes the wastes from the body

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Chapter 17

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  1. Chapter 17 The Respiratory & Excretory Systems

  2. Section 3: The Excretory System • The Excretory System • Excretion (the removal process) • The excretory system is the system in the body that collects wastes produced by cells and removes the wastes from the body • The structures of the excretory system that eliminate urea, water, and other wastes include your kidneys, ureters, urinary bladder, & urethra

  3. Section 3 • The Excretory System • Urea • Kidneys • Urine • Ureters • Urinary bladder • Urethra • What is the role of the ureters?

  4. Section 3 • Filtration of Wastes • Nephrons • The nephrons filter wastes in stages. First, both wastes and needed materials, such as glucose, are filtered out of the blood. Then, much of the needed material is returned to the blood, and the wastes are eliminated from the body

  5. Section 3 • Filtration of Waste • Filtering Out Wastes • Formation of Urine • Analyzing Urine for Signs of Disease • What could it mean if there is glucose in the urine?

  6. Section 3 • Excretion & Homeostasis • Excretion maintains homeostasis by keeping the body’s internal environment stable and free of harmful levels of chemicals. In addition to the kidneys, organs of excretion that maintain homeostasis include the lungs, skin, and liver

  7. Section 3 • Excretion & Homeostasis • Kidneys • Lungs & Skin • Liver • What substances are excreted in perspiration?

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