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2 Functions of kidneys ,[object Object],[object Object]
Kidneys as Osmoregulators ,[object Object],High Water Potential Red Blood Cells will burst Low Water Potential Cells and tissues becomes dehydrated and shrink (flaccid) Water enters cells Water leaves cells
Kidneys as Osmoregulators…. ,[object Object],[object Object],[object Object],Therefore, the  water potential  is controlled by controlling the  amount of water  in the plasma  via the kidney
Kidneys as Osmoregulators…. ,[object Object],[object Object],[object Object]
Kidneys as Osmoregulators…. ,[object Object],Secrete More ADH Loss of water from body Water potential decreases Kidney tubules reabsorb more water Less Urine is Produced Water Potential Returns to Normal Pituitary Gland
Kidneys as Osmoregulators…. Secrete Less ADH Large Intake of Water Water potential increases Kidney tubules reabsorb less water More Urine is Produced Water Potential Returns to Normal Pituitary Gland
Kidney Failure ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],top 2 causes
Kidney Failure ,[object Object],[object Object],[object Object],[object Object]
The Dialysis Machine ,[object Object],[object Object],[object Object],http://students.sahs.uth.tmc.edu/Ssadeghi/images/Hemodialysis.jpg
How a Dialysis Machine Works (1) ,[object Object],[object Object],[object Object],[object Object]
How a Dialysis Machine Works (2) ,[object Object],[object Object]
Scheme of partially permeable membrane during  hemodialysis , where red is blood, blue is the dialysing fluid, and yellow is the membrane.
How a Dialysis Machine Works (3) ,[object Object],[object Object],[object Object]
Removal of CO 2  from the Lungs  C 6 H 12 O 6  + 6O 2    6CO 2  +   6H 2 O  + Energy Aerobic respiration diffuses into the blood plasma Carried in the form of “ hydrogen carbonate ions (HCO 3 - )” blood passes through the lungs hydrogen carbonate   CO 2  + H 2 O convert In the Lungs, CO 2  concentration  is low,
Removal of CO 2  from the Lungs  hydrogen carbonate   CO 2  + H 2 O convert diffuses out of the blood capillaries into the alveolar cavities for exhalation CO2 CO 2 O 2
Quiz
cortex renal artery renal vein pelvis ureter medulla

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Chapter 11 Excretion Lesson 3 - The 2 functions of kidneys and Kidney failure

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  • 6. Kidneys as Osmoregulators…. Secrete Less ADH Large Intake of Water Water potential increases Kidney tubules reabsorb less water More Urine is Produced Water Potential Returns to Normal Pituitary Gland
  • 7.
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  • 12. Scheme of partially permeable membrane during hemodialysis , where red is blood, blue is the dialysing fluid, and yellow is the membrane.
  • 13.
  • 14. Removal of CO 2 from the Lungs C 6 H 12 O 6 + 6O 2 6CO 2 + 6H 2 O + Energy Aerobic respiration diffuses into the blood plasma Carried in the form of “ hydrogen carbonate ions (HCO 3 - )” blood passes through the lungs hydrogen carbonate CO 2 + H 2 O convert In the Lungs, CO 2 concentration is low,
  • 15. Removal of CO 2 from the Lungs hydrogen carbonate CO 2 + H 2 O convert diffuses out of the blood capillaries into the alveolar cavities for exhalation CO2 CO 2 O 2
  • 16. Quiz
  • 17. cortex renal artery renal vein pelvis ureter medulla