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1. Peristaltic contractions occur in the ________.
 
 
 
 

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2. Somatic motor neurons must be ________ to relax the external urethral sphincter to allow urination.
 
 

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3. Which part of the urinary system is not completely retroperitoneal?
 
 
 
 

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4. Critical Thinking: Why are females more likely to contract bladder infections than males?

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5. Critical Thinking: Describe how forceful urination is accomplished.

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