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23 - Biology:,6e(Campbell Chapter23 1 Circulation...

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Biology: Concepts and Connections, 6e (Campbell)  Chapter 23    1
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Circulation Multiple - Choice Questions 2) 
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Which of  the following statements regarding circulatory systems is  true?  A) 
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The smallest  blood vessels in the body are veins.  B) 
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A circulatory  system is  necessary in any animal whose body is too large or too complex for vital chemicals to reach all parts of the body by  diffusion.  C) 
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Red blood cells  are too large to pass single file through capillaries.  D) 
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Materials are  exchanged directly between the blood and body cells.  E) 
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The circulatory  system transports gases and nutrients, but the lymphatic system transports metabolic wastes.  Answer:  
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Topic: 
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23.1  Skill: 
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Conceptual  Understanding
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3) 
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Which of  the following is a function of the circulatory system?  A) 
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maintaining an  optimal red blood cell count  B) 
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transporting  nerve impulses throughout the body  C) 
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governing  nutrient concentration in the blood  D) 
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transporting  nutrients to body cells  E) 
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mounting a  response to invading microorganisms  Answer:  
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Topic: 
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23.1  Skill: 
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