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Chapter 23 The Circulatory, Respiratory, Digestive, and Excretory ...

Chapter 23 The Circulatory, Respiratory, Digestive, and Excretory ...

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2. List organs of the excretory system <strong>and</strong> their functions.<br />

3. Describe how nephrons filter blood <strong>and</strong> form urine.<br />

4. State the functions of the ureters, bladder, <strong>and</strong> urethra.<br />

Apply Concepts<br />

5. Tom was seriously injured in a car crash. As a result, he had to have one of his kidneys removed. Does<br />

Tom need dialysis? Why or why not?<br />

Think Critically<br />

6. Explain how the kidneys maintain homeostasis.<br />

Points to Consider<br />

Infections caused by microorganisms may affect any of the organ systems described in this chapter. For<br />

example, you have just read that bacterial infections of the bladder are common.<br />

• What defenses do you think the body has to keep out microorganisms?<br />

• Do you know if there are other defenses against microorganisms if they manage to get inside the<br />

body?<br />

Image Sources<br />

(1) CK-12 Foundation. . CC-BY-NC-SA 3.0.<br />

(2) (Milk) Janine Chedid; (Shellfish) Frank C. Müller; (Nuts) Courtesy of Alice Welch/US Department<br />

of Agriculture; (Grains) Courtesy of Peggy Greb/Agricultural Research Service; (Egg) David<br />

Benbennick. [(Milk) http://en.wikipedia.org/wiki/File:Milk.jpg; (Shellfish)<br />

http://commons.wikimedia.org/wiki/File:Garnelen_im_Verkauf_fcm.jpg; (Nuts)<br />

http://commons.wikimedia.org/wiki/File:Peanuts.jpg; Grains)<br />

http://commons.wikimedia.org/wiki/File:Various_grains.jpg; (Egg)<br />

http://commons.wikimedia.org/wiki/File:Fried_egg,_sunny_side_up.jpg ]. (Milk)<br />

CC-BY-SA 3.0; (Shellfish) Public Domain; (Nuts) Public Domain; (Grains) Public Domain; (Egg)<br />

Public Domain.<br />

(3) delldot, modified by CK-12 Foundation.<br />

http://commons.wikimedia.org/wiki/File:Fluid-filled_alveolus1.svg. CC-BY-SA 3.0.<br />

(4) Sansculotte, modified by CK-12 Foundation.<br />

http://commons.wikimedia.org/wiki/Image:Grafik_blutkreislauf.jpg. CC-BY-SA-2.5.<br />

(5) Image copyright Alila Sao Mai, 2011. http://www.shutterstock.com. Used under license from<br />

Shutterstock.com.<br />

(6) Brbbl, modified by CK-12 Foundation.<br />

http://commons.wikimedia.org/wiki/File:Diafragma_ademhaling.gif. CC-BY-SA 3.0.<br />

www.ck12.org 726

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