the excretory system
DESCRIPTION
The Excretory System. Excretory System = Urinary System. How Our Body Eliminates Waste and keeps us healthy!. Function: Removes or excretes excess water, H 2 O, urea, carbon dioxide, CO 2 , and other wastes from our blood. Importance: - PowerPoint PPT PresentationTRANSCRIPT
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How Our Body Eliminates Waste and keeps us healthy!
Excretory System = Urinary System
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Function:Removes or excretes excess water, H2O, urea,
carbon dioxide, CO2, and other wastes from our blood.
Importance:Harmful chemicals made when the body creates
energy must be removed from blood to keep you healthy
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Kidneys – filter out excess water, salt and chemicals as urine
Lungs – filter out carbon dioxide, CO2, from the blood. (respiratory system)
Skin – excretes water, as sweat, which contains some trace chemical wastes, including urea. (epidermis)
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Liquid waste = urine
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http://kidshealth.org/kid/htbw/USmovie.html?tracking=K_RelatedArticle
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Artery
Vein
Kidney
Ureter
Urinary BladderUrethra
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KidneyK Ureter B Urethra
Ureters
Urinary BLADDER
Urethra
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Function - filter wastes and excess water from the blood.
Importance – control the amount of water in body, tell body when to make new red blood cells, take harmful chemicals from blood
Other Info – located in back under ribsYou have 2 kidneys, but can live with 1
Picture
Kidneys
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Function - tubes that take urine from the kidney to the urinary bladder.
Importance – after the waste is filtered from blood, it must go to the bladder for storage
Other Info – each kidney has its own ureter
Picture
Ureter
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Function: a sack that stores urine/liquid waste
Importance: Holds urine until you go to the bathroom
Other Info: when full, a message is sent to your brain telling you to go to the bathroom
Picture
Urinary Bladder
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Function- small tube that carries urine out of the body.
Importance – connects the bladder to the outside of the body, how urine leave body
Other Info – about 6mm wide
Picture
Urethra
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Tiny tubes in the kidneys that filter and clean blood and balance supply of water and salt. (about 1 million per kidney)
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1. The ______________ filter waste and excess water from the blood.
2. The tube that carries urine out of the body is called the _____________.
3. The urinary bladder stores ____________ until it is ready to exit the body.
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http://www.whyzz.com/why-is-pee-yellow
http://kidshealth.org/kid/htbw/pee.html
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Doctors analyze urine for disease;
Normal urine contains water, urea and trace minerals.
Sugar in urine indicates Diabetes
Protein in urine indicates the kidneys are not working and the person, or animal, is very sick.
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1. Excretory System2. Lungs3. Skin4. Kidneys5. Urine6. Nephrons7. Ureter8. Bladder9. Urethra
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HW review
Removes Water = Kidneys, SkinBrings Oxygen to blood = LungsRemoves Salt = Kidneys, SkinStores Urine = BladderRemoves C02 = LungsProduces Urine = KidneysRemoves Body Heat = Skin
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Today’s Goal
- To memorize the functions and order of the Kidneys, Ureter, Bladder and Urethra
- To learn the difference between URETER and URETHRA
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1. What are the tubes that carry urine from the kidneys to the bladder called?
2. The __________ is the tube that carries urine out of the body.
3. What is the job of the kidneys?