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The Excretory System

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The Excretory System Urine for a Great Time!!! Primary Urinary Organs 2 Kidneys Renal cortex (outer region) Renal medulla (inner region) Nephron: functional unit of ... – PowerPoint PPT presentation

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Title: The Excretory System


1
The Excretory System
  • Urine for a Great Time!!!

2
Primary Urinary Organs
  • 2 Kidneys
  • Renal cortex (outer region)
  • Renal medulla (inner region)
  • Nephron functional unit of kidney
  • Renal artery/vein kidney blood flow
  • 2- Ureters urine excretory duct
  • 1 - Urinary bladder urine storage
  • 1 - Urethra urine elimination tube

3
Kidneys
  • Two reddish organs just above the waist behind
    the stomach
  • Filter the blood and removes waste

4
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5
Ureter
  • Connects the kidneys to the urinary bladder

6
Urinary Bladder
  • Smooth muscle bag
  • Stores waste solution - urine

7
Urethra
  • Connects bladder to outside of the body
  • Allows urine to pass out of the body

8
Nephron
  • Filtering unit of the kidney
  • Blood enters full of waste and leaves filtered
  • Blood enters under high pressure and flows into
    the capillary beds

9
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10
U-shaped Tubules (Loop of Henle)
  • Most of the ions and water
  • All of the glucose and amino acids
  • Reabsorbed into the bloodstream
  • This is how the bodys water is conserved
  • Homeostasis is maintained

11
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12
The Human Kidney Nephron
13
Excretory System
  • Contributing Excretory Organs
  • Liver
  • removes hazardous chemicals from the blood.
  • "detoxifies" the blood
  • For this reason, alcoholics and other types of
    addicts have a higher incidence of liver disease.
  • Some proteins other nitrogenous compounds are
    broken down in the liver forming a compound call
    urea
  • Lungs
  • excrete waste like carbon dioxide and water.
  • Skin
  • rids waste from the body through sweat glands
  • Kidneys

14
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