1. Human Body Unit
Part IX/XIII
The Excretory System

2. NGSS 3-5
NGSS MS

3. NGSS HS

4. New Area of Focus: The Excretory System
Copyright © 2010 Ryan P. Murphy

5. The excretory system provides a pathway to remove wastes from the body.
Copyright © 2010 Ryan P. Murphy

6. A B C The excretory system removes excess… Nutrients Marrow Cells
Oxygen
Oxygen
Nutrients
Plasma
Air
Water
Salts
CO2
Urea
Copyright © 2010 Ryan P. Murphy

7. A B C The excretory system removes excess… Nutrients Marrow Cells
Oxygen
Oxygen
Nutrients
Plasma
Air
Water
Salts
CO2
Urea
Copyright © 2010 Ryan P. Murphy

8. C The process that removes these wastes is called excretion. Water
Salts
CO2
Urea
Copyright © 2010 Ryan P. Murphy

9. C Which two do the lungs get rid of? Water Salts CO2 Urea
Copyright © 2010 Ryan P. Murphy
Copyright © 2010 Ryan P. Murphy

10. C Which two do the lungs get rid of? Water Salts CO2 Urea
Copyright © 2010 Ryan P. Murphy
Copyright © 2010 Ryan P. Murphy

11. The remaining organs of the excretory system are the

12. The remaining organs of the excretory system are the kidneys,
Copyright © 2010 Ryan P. Murphy

13. The remaining organs of the excretory system are the kidneys, liver,
Copyright © 2010 Ryan P. Murphy

14. The remaining organs of the excretory system are the kidneys, liver, and skin.
Copyright © 2010 Ryan P. Murphy

16. Which organ of the excretory system does this picture represent?

17. The Kidneys: They filter waste products from the blood to keep it clean and balanced.
Copyright © 2010 Ryan P. Murphy

18. Bean shaped organ about size of fist located near the middle of the back.
Copyright © 2010 Ryan P. Murphy

19. Which letter below is this Cat’s Right Kidney?

20. Which letter below is this Cat’s Right Kidney?

21. Copyright © 2010 Ryan P. Murphy

22. The kidneys process about 200 quarts of blood and produce 2 quarts of waste product (urine).
Copyright © 2010 Ryan P. Murphy

23. The kidneys process about 200 quarts of blood and produce 2 quarts of waste product (urine).
The urine travels through the ureters to the bladder
Copyright © 2010 Ryan P. Murphy

24. Waste comes from old tissues / cells and from food as the body uses energy and repairs itself.
Copyright © 2010 Ryan P. Murphy

25. Waste comes from old tissues and cells and from food as the body uses energy and repairs itself.
This waste, if not removed will cause build-up and can even cause damage.
Copyright © 2010 Ryan P. Murphy

26. Waste comes from old tissues / cells and from food as the body uses energy and repairs itself.
This waste, if not removed will cause build-up and can even cause damage.
Copyright © 2010 Ryan P. Murphy

27. Each kidney has how many nephrons?
A.) ½ a nephron
B.) One full nephron
C.) 6 nephrons
D.) A million nephrons
Copyright © 2010 Ryan P. Murphy

28. Each kidney has how many nephrons?
A.) ½ a nephron
B.) One full nephron
C.) 6 nephrons
D.) A million nephrons
Copyright © 2010 Ryan P. Murphy

29. The Kidney
Copyright © 2010 Ryan P. Murphy

30. The Kidney

31. Copyright © 2010 Ryan P. Murphy

32. Copyright © 2010 Ryan P. Murphy

34. Glomerulus

35. Glomerulus
Filtration of waste

36. Glomerulus
Bow Man’s Capsule
Filtration of waste

37. Glomerulus
Bow Man’s Capsule
Reabsorption
Filtration of waste

38. Glomerulus
Bow Man’s Capsule F F
Reabsorption F
Filtration of waste

39. F orm F F Glomerulus Bow Man’s Capsule Reabsorption
Filtration of waste

40. F orm F ollows F Glomerulus Bow Man’s Capsule Reabsorption
Filtration of waste

41. F orm F ollows F unction Glomerulus Bow Man’s Capsule Reabsorption
Filtration of waste
Copyright © 2010 Ryan P. Murphy

42. In the nephron, a tiny blood vessel (capillary) -intertwines with a tiny urine-collecting tube called a tubule.
Copyright © 2010 Ryan P. Murphy

43. Copyright © 2010 Ryan P. Murphy

44. The tiny blood vessels in the nephrons act like strainers.
Copyright © 2010 Ryan P. Murphy

45. The tiny blood vessels in the nephrons act like strainers.
Waste in the blood spills out through the holes while the nutrients do not.
Copyright © 2010 Ryan P. Murphy

46. The tiny blood vessels in the nephrons act like strainers.
Waste in the blood spills out through the holes while the nutrients do not.
Urea
Copyright © 2010 Ryan P. Murphy

47. The tiny blood vessels in the nephrons act like strainers.
Waste in the blood spills out through the holes while the nutrients do not.
Urea
Copyright © 2010 Ryan P. Murphy

48. The tiny blood vessels in the nephrons act like strainers.
Waste in the blood spills out through the holes while the nutrients do not.
Salts
Copyright © 2010 Ryan P. Murphy

49. The tiny blood vessels in the nephrons act like strainers.
Waste in the blood spills out through the holes while the nutrients do not.
Water
Urine is about 96% Water.
Copyright © 2010 Ryan P. Murphy

50. The tiny blood vessels in the nephrons act like strainers.
Waste in the blood spills out through the holes while the nutrients do not.
Water
Blood Cell
Protein
Copyright © 2010 Ryan P. Murphy

51. The tiny blood vessels in the nephrons act like strainers.
Waste in the blood spills out through the holes while the nutrients do not.
Water
Too Large to fit through
Blood Cell
Protein
Copyright © 2010 Ryan P. Murphy

52. The kidneys measure out chemicals such as sodium, phosphorus, and potassium and release them back to the blood to return to the body.
Copyright © 2010 Ryan P. Murphy

53. The kidneys measure out chemicals such as sodium, phosphorus, and potassium and release them back to the blood to return to the body.
Reabsorption
Copyright © 2010 Ryan P. Murphy

54. The kidneys measure out chemicals such as sodium, phosphorus, and potassium and release them back to the blood to return to the body.
The kidneys regulate / balance the bodies level of these substances.
Reabsorption
Learn more about the kidneys and kidney diseases at…
Copyright © 2010 Ryan P. Murphy

55. B A The amount of water and salts that you consume changes your urine.
Which person drank plenty of water this morning? B A
Copyright © 2010 Ryan P. Murphy

56. B A The amount of water and salts that you consume changes your urine.
Which person drank plenty of water this morning? B A
Copyright © 2010 Ryan P. Murphy

57. A B The amount of water and salts that you consume changes your urine.
Which person ate lots of salty junk food this morning? A B
Copyright © 2010 Ryan P. Murphy

58. If you eat lots of salty foods you will produce less urine
If you eat lots of salty foods you will produce less urine. That urine will have less water in it. A B
Copyright © 2010 Ryan P. Murphy

59. If you eat lots of salty foods you will produce less urine
If you eat lots of salty foods you will produce less urine. That urine will have less water in it.
Your kidneys control the amount of water in your body. A B
Copyright © 2010 Ryan P. Murphy

60. As a general rule, you want your urine to be clear and copious.
Copyright © 2010 Ryan P. Murphy

61. As a general rule, you want your urine to be clear and copious.
Copious: Abundant in supply or quantity.
Copyright © 2010 Ryan P. Murphy

62. As a general rule, you want your urine to be clear and copious.
Copious: Abundant in supply or quantity.
Not bright yellow once a day.
Copyright © 2010 Ryan P. Murphy

63. As a general rule, you want your urine to be clear and copious.
Copious: Abundant in supply or quantity.
Not bright yellow once a day.
Copyright © 2010 Ryan P. Murphy

64. As a general rule, you want your urine to be clear and copious.
Copious: Abundant in supply or quantity.
Not bright yellow once a day.
Copyright © 2010 Ryan P. Murphy

65. As a general rule, you want your urine to be clear and copious.
Copious: Abundant in supply or quantity.
Not bright yellow once a day.
Copyright © 2010 Ryan P. Murphy

66. Should the person below drink more hydrating fluids?

67. Should the person below drink more hydrating fluids? Okay

68. Should the person below drink more hydrating fluids?

69. Should the person below drink more hydrating fluids? Yes

70. Should the person below drink more hydrating fluids?

71. Should the person below drink more hydrating fluids? Not needed.

72. Should the person below drink more hydrating fluids?

73. Should the person below drink more hydrating fluids?
Iced Tea

74. Iced Tea Should the person below drink more hydrating fluids?
Learn more about your urine at…

75. Can you drink your own urine?
If your stuck on a raft etc. in a survival situation in the middle of the ocean.

76. Drinking your urine may keep you alive an extra day or two.
Urine is mostly water so it can replenish lost water. 95%
Sterile so it won’t give you disease.
The other 5% is going back to your kidneys and after a day or two this highly concentrated waste can cause kidney failure.
So your in trouble from total dehydration, or complete kidney failure.

77. Kidney Stone: A hard mass formed in the kidneys, and can’t be dissolved.

79. Kidney Stones: Cause severe stomach and back aches
Kidney Stones: Cause severe stomach and back aches. They can become lodged and block the flow of URINE.

80. Treatment Dietary Treatment (Changes) Pass the stone (if small)
Surgery
Shockwave Surgery called LITHOTRIPSY

81. Treatment Dietary Treatment (Changes) Pass the stone (if small)
Surgery
Shockwave Surgery
Treatment in 1935

82. Video Link! Khan Academy, Kidney and Nephron (18 minutes) - Advanced
Copyright © 2010 Ryan P. Murphy

83. Urine travels from the kidneys through narrow tubes called ureters to the bladder.
Copyright © 2010 Ryan P. Murphy

84. Urinary Bladder: Stores urine until excretion.
Copyright © 2010 Ryan P. Murphy

85. Activity! Step by step drawing of the excretory system.
(1/2 a page) Start on next slide.
Copyright © 2010 Ryan P. Murphy

86. Excretory System Available Sheet.

87. Copyright © 2010 Ryan P. Murphy

89. Copyright © 2010 Ryan P. Murphy

90. Copyright © 2010 Ryan P. Murphy

92. Kidneys
Copyright © 2010 Ryan P. Murphy

93. Kidneys
Ureters
Copyright © 2010 Ryan P. Murphy

94. Kidneys
Ureters
Bladder
Copyright © 2010 Ryan P. Murphy

95. Kidneys
Ureters
Bladder
Urethra
Copyright © 2010 Ryan P. Murphy