human body unit part ix/xiii. new area of focus: the excretory system new area of focus: the...
TRANSCRIPT
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Human Body Unit
Part IX/XIII
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NGSS 3-5
NGSS MS
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NGSS HS
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New Area of Focus: The Excretory System
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The excretory system provides a pathway to remove wastes from the body.
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• The excretory system removes excess…
Water
Salts
CO2
Urea
Oxygen
Nutrients
Plasma
Air
Nutrients
Marrow
Cells
Oxygen
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• The excretory system removes excess…
Water
Salts
CO2
Urea
Oxygen
Nutrients
Plasma
Air
Nutrients
Marrow
Cells
Oxygen
Copyright © 2010 Ryan P. Murphy
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Water
Salts
CO2
Urea
The process that removes these wastes is called excretion.
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Water
Salts
CO2
Urea
Which two do the lungs get rid of?
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Copyright © 2010 Ryan P. Murphy
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Water
Salts
CO2
Urea
Which two do the lungs get rid of?
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Copyright © 2010 Ryan P. Murphy
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• The remaining organs of the excretory system are the
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• The remaining organs of the excretory system are the kidneys,
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• The remaining organs of the excretory system are the kidneys, liver,
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• The remaining organs of the excretory system are the kidneys, liver, and skin.
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Which organ of the excretory system does this picture represent?
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The Kidneys: They filter waste products from the blood to keep it clean and balanced.
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• Bean shaped organ about size of fist located near the middle of the back.
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• Which letter below is this Cat’s Right Kidney?
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• Which letter below is this Cat’s Right Kidney?
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Copyright © 2010 Ryan P. Murphy
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• The kidneys process about 200 quarts of blood and produce 2 quarts of waste product (urine).
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• 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
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• Waste comes from old tissues / cells and from food as the body uses energy and repairs itself.
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• Waste comes from old tissues / cells and from food as the body uses energy and repairs itself.– This waste, if not removed will build-up and
cause damage.
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• Waste comes from old tissues / cells and from food as the body uses energy and repairs itself.– This waste, if not removed will build-up and
cause damage.
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• Each kidney has how many nephrons?– A.) ½ a nephron– B.) One full nephron– C.) 6 nephrons– D.) A million nephrons
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• Each kidney has how many nephrons?– A.) ½ a nephron– B.) One full nephron– C.) 6 nephrons– D.) A million nephrons
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The Kidney
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The Kidney
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Copyright © 2010 Ryan P. Murphy
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Copyright © 2010 Ryan P. Murphy
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Glomerulus
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Glomerulus
Filtration of waste
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Glomerulus
Filtration of waste
Bow Man’s Capsule
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Glomerulus
Filtration of waste
Bow Man’s Capsule
Reabsorption
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Glomerulus
Filtration of waste
Bow Man’s Capsule
Reabsorption
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Glomerulus
Filtration of waste
Bow Man’s Capsule
Reabsorption
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Glomerulus
Filtration of waste
Bow Man’s Capsule
Reabsorption
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Glomerulus
Filtration of waste
Bow Man’s Capsule
Reabsorption
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• In the nephron, a tiny blood vessel (capillary) -intertwines with a tiny urine-collecting tube called a tubule.
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Copyright © 2010 Ryan P. Murphy
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• The tiny blood vessels in the nephrons act like strainers.
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• The tiny blood vessels in the nephrons act like strainers. – Waste in the blood spills out through the holes
while the nutrients do not.
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• 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
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• 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
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• 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
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• 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.
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• 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
ProteinBlood Cell
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• 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
ProteinBlood Cell
Too Large to fit through
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• The kidneys measure out chemicals such as sodium, phosphorus, and potassium and release them back to the blood to return to the body.
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• The kidneys measure out chemicals such as sodium, phosphorus, and potassium and release them back to the blood to return to the body.
Reabsorption
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• 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
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Learn more about the kidneys and kidney diseases at… http://www.webmd.com/urinary-incontinence-oab/picture-of-the-kidneys
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• The amount of water and salts that you consume changes your urine. – Which person drank plenty of water this
morning?
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• The amount of water and salts that you consume changes your urine. – Which person drank plenty of water this
morning?
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• The amount of water and salts that you consume changes your urine. – Which person ate lots of salty junk food this
morning?
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• If you eat lots of salty foods you will produce less urine. That urine will have less water in it.
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• 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.
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• As a general rule, you want your urine to be clear and copious.
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• As a general rule, you want your urine to be clear and copious.– Copious: Abundant in supply or quantity.
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• 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.
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• 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.
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• 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.
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• 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.
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• Should the person below drink more hydrating fluids?
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• Should the person below drink more hydrating fluids? Okay
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• Should the person below drink more hydrating fluids?
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• Should the person below drink more hydrating fluids? Yes
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• Should the person below drink more hydrating fluids?
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• Should the person below drink more hydrating fluids? Not needed.
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• Should the person below drink more hydrating fluids?
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• Should the person below drink more hydrating fluids?
Iced Tea
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• Should the person below drink more hydrating fluids?
Iced Tea
Learn more about your urine at… http://www.webmd.com/urinary-incontinence-oab/features/the-truth-about-urine
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• Can you drink your own urine?– If your stuck on a raft etc. in a survival situation
in the middle of the ocean.
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• 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.
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• Kidney Stone: A hard mass formed in the kidneys, typically consisting of insoluble calcium compounds.
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• Kidney Stones: Cause severe stomach and back aches that go down to the genitals and last for a long period.
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• Treatment– Dietary Treatment (Changes)– Pass the stone (if small)– Surgery – Shockwave Surgery
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• Treatment– Dietary Treatment (Changes) – Pass the stone (if small)– Surgery – Shockwave Surgery– Treatment in 1935
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• Video Link! Khan Academy, Kidney and Nephron (18 minutes) - Advanced– http://www.khanacademy.org/video/the-kidney
-and-nephron?playlist=Biology
Copyright © 2010 Ryan P. Murphy
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Urine travels from the kidneys through narrow tubes called ureters to the bladder.
Copyright © 2010 Ryan P. Murphy
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Urinary Bladder: Stores urine until excretion.
Copyright © 2010 Ryan P. Murphy
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• Activity! Step by step drawing of the excretory system.– (1/2 a page) Start on next slide.
Copyright © 2010 Ryan P. Murphy
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• Excretory System Available Sheet.
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Copyright © 2010 Ryan P. Murphy
Copyright © 2010 Ryan P. Murphy
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Copyright © 2010 Ryan P. Murphy
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Copyright © 2010 Ryan P. Murphy
Copyright © 2010 Ryan P. Murphy
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Kidneys
Copyright © 2010 Ryan P. Murphy
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Kidneys
Ureters
Copyright © 2010 Ryan P. Murphy
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Kidneys
Ureters
Bladder
Copyright © 2010 Ryan P. Murphy
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Kidneys
Ureters
BladderUrethra
Copyright © 2010 Ryan P. Murphy