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Excretory System

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Excretory System Excretory System Why do our bodies need to filter waste from the body? Maintain homeostasis Removal of harmful materials Removal of excess fluids ... – PowerPoint PPT presentation

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Title: Excretory System


1
Excretory System
2
Excretory System
  • Why do our bodies need to filter waste from the
    body?
  • Maintain homeostasis
  • Removal of harmful materials
  • Removal of excess fluids, chemicals, minerals,
    vitamins, salts, and other wastes from the blood

3
Organs of the Excretory System
  • Kidneys filter
  • blood that has
  • collected wastes
  • from cells

4
Organs of the Excretory System
  • Kidneys filter
  • blood that has
  • collected wastes
  • from cells
  • Nephrons filters
  • inside the kidneys
  • Produce urine
  • (sterile waste fluid,
  • 96 water)

5
Organs of the Excretory System
  • Ureters tubes that
  • lead from each kidney to bladder

6
Organs of the Excretory System
  • Urinary bladder
  • muscular organ that
  • holds urine

7
Organs of the Excretory System
  • Urethra tube that carries urine from the
    bladder out of the
  • body

8
Where is urine stored until the body is ready to
eliminate it?
  1. Kidneys
  2. Ureters
  3. Bladder
  4. Urethra

9
Functions of Excretory System
  • Rids blood of
  • wastes (urea)

10
Functions of Excretory System
  • Rids blood of
  • wastes (urea)
  • Controls blood
  • volume by removing
  • extra water
  • produced by cells

11
Functions of Excretory System
  • Rids blood of
  • wastes (urea)
  • Controls blood
  • volume by removing
  • extra water
  • produced by cells
  • Balances salts and
  • water so cells can function properly

12
Which is not a function of the excretory system?
  1. Removes wastes from the blood
  2. Removes excess water from the blood
  3. Removes carbon dioxide from the blood
  4. Removes excess salt from the blood

13
Other Excretory Organs
  • Skin releases perspiration (water
  • and salts) to cool off the body

14
Other Excretory Organs
  • Lungs release carbon dioxide from the body

15
Which system does not include an excretory organ?
  1. Excretory system
  2. Integumentary system
  3. Cardiovascular system
  4. Respiratory system

16
Excretory System
  • How did the Filter It investigation model our
    excretory system?
  • What are some advantages of the model?
  • What are some limitations of the model?
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