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The Excretory System by Brandi Walters
Read silently and answer questions
Back side = cross out question that states “People often sweat more when they are
exercising…”
How Our Body Eliminates Waste and keeps us healthy!
Excretory System = Urinary System
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
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)
Liquid waste = urine
http://kidshealth.org/kid/htbw/USmovie.html?tracking=K_RelatedArticle
Artery
Vein
Kidney
Ureter
Urinary Bladder
Urethra
Kidney K Ureter B Urethra
Ureters
Urinary BLADDER
Urethra
53B > Functions
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
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
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
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
Tiny tubes in the kidneys that filter and clean blood and balance supply of water and salt. (about 1 million per kidney)
Independent Practice
Handouts Waste Removal and Edhelper Articles> read and answer questions Finish for HW if not done in class
◦ r
1st block Handouts Waste Removal and Edhelper Articles> read and answer questions Finish for HW if not done in class
◦ r
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.
http://www.whyzz.com/why-is-pee-yellow
http://kidshealth.org/kid/htbw/pee.html
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.
How the Excretory System Work Notebook Quiz
- Write the word from the word bank to complete each definition
- You will be able to use notes so make sure you have them
Warm Up
Warm Up Answers1. Excretory System2. Lungs3. Skin4. Kidneys5. Urine6. Nephrons7. Ureter8. Bladder9. Urethra
HW review
Removes Water = Kidneys, SkinBrings Oxygen to blood = LungsRemoves Salt = Kidneys, SkinStores Urine = BladderRemoves C02 = LungsProduces Urine = KidneysRemoves Body Heat = Skin
1. D. Bladder2. B. Ureters3. D. One4. C. Three5. A. Valves6. B. True7. A. False
1. B. Two2. D. Five3. D. A kidney bean4. C. To take waste out of blood5. D. Renal Artery6. B. Ureters7. D. In the bladder8. C. Red Blood9. To replace the water and electrolytes your
body looses when it sweats
Today’s Goal
- To memorize the functions and order of the Kidneys, Ureter, Bladder and Urethra
- To learn the difference between URETER and URETHRA
Foldable > 4 doors
Outside InsideKidney Info given in Ureter diagram on 53B
Bladder Urethra
1. Textbook2. The Bladder
Article & Questions
3. Colored Diagram4. Crossword Puzzle5. What is Urine?
Article
*you must go in order
Textbook52 – 55 BAnswer 1 – 3 on 55Write questions and
answers
*each assignment is worth a 100 HW grade if completed,
If not it is a zero
Independent Practice
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?
The Excretory System
HW will be collected once quiz starts
Put something in front of and beside you
Eyes on your own paper
No talking
With your group you will create an educational poster about a excretory/urinary problem
Depending on the assigned topic, you will be given a set of questions to answer and put on your poster
Due at the end of class today
Grade depends on the following
1. Completion – all the required info is on the poster
2. Collaboration (working together, everyone helping)
3. Use of time and resources4. Neatness, Color and Pictures