Name_____ Date_______Urinary System and Excretion WebQuest I. http://library.thinkquest.org/2824/Excretory.html 1. OH NO!!!! YOU HAVE FOUND YOUR SELF IN EUROPE..HOW DO YOU ASK FOR THE BATHROOM?__________W.C.___________ 2. OH NO!!!! YOU HAVE FOUND YOUR SELF IN CHINA..HOW DO YOU ASK FOR THE BATHROOM?______cze-swo_________________ 3. OH NO!!!! YOU HAVE FOUND YOUR SELF IN SPAIN..HOW DO YOU ASK FOR THE BATHROOM?_____bano______________ 4. The Excretory system is the system that _rids the body of all its wastes_________________________. 5. TRUE or FALSE: There is water in your urine? So this means, if you were dehydrated in the desert and needed a drink, you should drink your urine to HYDRATE YOU! II. http://www.medindia.net/animation/anatomy_urinary.asp 1. Each kidney is about the size of a human __fist______. 2. Label the diagram. Calyces Renal Artery Renal Vein Ureter Medulla Cortex [http://www.minnpost.com/client_files/alternate_images/ 2635/large_KidneyDiagram.jpg] 3. The specialized unit of the kidney is called the nephron, and its function is to produce __urine______ by filtering waste and extra fluid from the blood. (Stop at slide 3) III. http://www.tutorvista.com/content/biology/biology-iv/excretion/nephron-structure.php 4. The __nephron________ is the functional unit of the kidney. It consists of a twisted _tubule_____ closed at one end and open at the other with a network of associated blood vessels (glomerulus). 5. Each kidney has approximately _1 million___ nephrons that are about _3 cm______ in length. . The bulk of the filtering takes place in the _glomerulus______. IV. The __Bowman’s_____ __Capsule_______ is a large double-walled cup that contains a group of capillaries called the _glomerulus_________.asp (slide 4) 9. Go back to: http://www. 2.biologymad. The filtered wastes then travel through the tubule where the excess fluid is converted to __urine_____. Directions: Go to http://www. 14. Finally.swf. The urine reaches the renal pelvis and passes into the __ureter____. 7.medindia.Label the 4 primary regions of the nephron: Proximal Convoluted Tubule Nephron Loop of Henle Distal Convoluted Tubule Collecting Duct 6. 12. the filtered blood leaves the kidney through the renal ___vein_______.com/resources/kidney. It is continuous with the distal and proximal convoluted tubules. V. 8. What does the renal vein do? What direction does blood flow in (toward or away from kidney)? It transports blood that has been balanced by the kidney. The __Loop of Henle__________ is a V-shaped segment of the nephron located in the renal medulla. it enters the urinary _bladder____ to be stored until it is released via the _uretha_______. 13. What does the renal artery do? What direction does blood flow in (toward or away from the kidney)? . It flows away from the kidney. The __collecting_____ ducts receive the collecting tubules of several nephrons and open into the renal pelvis. Blood enters the kidney through the renal _artery_____ and passes into the nephron.net/animation/anatomy_urinary. Next. 10. 11. 1. Water and salt both filtrate as a wastes and remain in the blood stream. What is the middle of the kidney called? The pelvis 6. Click on the Loop of Henle. 7. 5. After collecting in the pelvis it travels to the ureter. Sodium also diffuses into the loop. What does this section do? It filters the blood and reabsorbs some substances back into the blood. VI. http://kidshealth. Which section of the kidney does the Loop of Henle belong to? The Loop of Henle belongs to the medulla of the kidney. What does this section do? The medulla reabsorbs water into the blood in order to balance the blood concentration.html . 3. What is the outermost part of the kidney called? The kidney cortex 4. 13. What is the innermost part of the kidney called? The medulla 8. Click on each of the substances in the blood. The descending loop is permeable to water and water diffuses out due to the low water potential of the surrounding medulla tissue. Which section of the kidney does the glomerulus belong to? The nephron 10. but sodium is transported out in order to maintain a low water potential in the medulla. Water and salt both filtrate as a wastes and remain in the blood stream. 12. 9.org/parent/general/body_basics/kidneys_urinary. Describe the movement of water and of salt in the descending loop. Describe the movement of water and salt in the ascending loop. The ascending loop is impermeable to water.The renal artery carries blood into the kidney that has not yet been balanced. What does this section do? The pelvis is where urine travels to and collects. Which of the substances diffuses back into the blood? Glucose and protein remain in the blood stream. 11. 14. Which of these substances remains within the filtrate as waste? Urea remains in the filtrate as waste. Identify four different wastes produced by your body? a. carbon gas d. feces b.1. urine . sweat c. The Kidney and the Nephron. LABEL your picture and give a brief description of each body part. Out of these wastes produced by your body.com/dialysis/ click on Animation and watch “How dialysis works” 1. Osmoregulation and Excretion Videos 1.php?id=75 4. At the top. It also aids people whose kidneys do not filter the blood like they are supposed to. http://www. Secondary Active Transport in the Nephron http://www.davita. VII.2. What are some benefits of dialysis? One benefit of dialysis is that it is a painless process. There is a special fluid with pure water that will help filter the blood and help the body keep the substances it needs.khanacademy. 2.com/videos. Renal Anatomy-Kidney . What is dialysis? Dialysis is treatment for kidney disease.org/science/biology/human-biology/v/the-kidney-and-nephron 2.org/science/biology/human-biology/v/secondary-activetransport-in-the-nephron 3. right side of the page click on “Body Basics: Kidney and Urinary Tract”.khanacademy. If you move the mouse over each body part it will give you a description. DRAW in the space below a picture of the Urinary tract. Nephron Function at Handwritten Tutorials http://handwrittentutorials. http://www. which waste product is produced by the kidney?___urine_________ 3. com/videos.php?id=73 . Renal Anatomy-The Nephron http://handwrittentutorials.com/videos.http://handwrittentutorials.php?id=72 5.