human body unit part ix/xiii. new area of focus: the excretory system new area of focus: the...
TRANSCRIPT
Human Body Unit
Part IX/XIII
NGSS 3-5
NGSS MS
NGSS HS
New Area of Focus: The Excretory System
Copyright © 2010 Ryan P. Murphy
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
Copyright © 2010 Ryan P. Murphy
• The excretory system removes excess…
Water
Salts
CO2
Urea
Oxygen
Nutrients
Plasma
Air
Nutrients
Marrow
Cells
Oxygen
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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
Water
Salts
CO2
Urea
Which two do the lungs get rid of?
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Copyright © 2010 Ryan P. Murphy
• The remaining organs of the excretory system are the
• 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?
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?
• Which letter below is this Cat’s Right Kidney?
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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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Glomerulus
Glomerulus
Filtration of waste
Glomerulus
Filtration of waste
Bow Man’s Capsule
Glomerulus
Filtration of waste
Bow Man’s Capsule
Reabsorption
Glomerulus
Filtration of waste
Bow Man’s Capsule
Reabsorption
Glomerulus
Filtration of waste
Bow Man’s Capsule
Reabsorption
Glomerulus
Filtration of waste
Bow Man’s Capsule
Reabsorption
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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• 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
• 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.
Copyright © 2010 Ryan P. Murphy
• 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
• 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
• 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
• Should the person below drink more hydrating fluids?
• Should the person below drink more hydrating fluids? Okay
• Should the person below drink more hydrating fluids?
• Should the person below drink more hydrating fluids? Yes
• Should the person below drink more hydrating fluids?
• Should the person below drink more hydrating fluids? Not needed.
• Should the person below drink more hydrating fluids?
• Should the person below drink more hydrating fluids?
Iced Tea
• 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
• Can you drink your own urine?– If your stuck on a raft etc. in a survival situation
in the middle of the ocean.
• 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.
• Kidney Stone: A hard mass formed in the kidneys, typically consisting of insoluble calcium compounds.
• Kidney Stones: Cause severe stomach and back aches that go down to the genitals and last for a long period.
• Treatment– Dietary Treatment (Changes)– Pass the stone (if small)– Surgery – Shockwave Surgery
• Treatment– Dietary Treatment (Changes) – Pass the stone (if small)– Surgery – Shockwave Surgery– Treatment in 1935
• Video Link! Khan Academy, Kidney and Nephron (18 minutes) - Advanced– http://www.khanacademy.org/video/the-kidney
-and-nephron?playlist=Biology
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Urine travels from the kidneys through narrow tubes called ureters to the bladder.
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Urinary Bladder: Stores urine until excretion.
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• Activity! Step by step drawing of the excretory system.– (1/2 a page) Start on next slide.
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• Excretory System Available Sheet.
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Kidneys
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Kidneys
Ureters
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Kidneys
Ureters
Bladder
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Kidneys
Ureters
BladderUrethra
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