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NR 507 PATHO FINAL EXAM
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Question 1

What period follows depolarization of the myocardium and represents a period during which no new cardiac potential can be propagated?
Correct!
  
Refractory
 
  
Threshold
 
  
Sinoatrial (SA)
 
  
Hyperpolarization
 
During the refractory period, no new cardiac action potential can be initiated by a stimulus. This selection is the only option that accurately identifies the period described in the question.
 
Question 2

What is the suggested mean blood pressure for an 8- to 9-year-old child?
Correct!
  
106/58 mm Hg
 
  
104/55 mm Hg
 
  
112/62 mm Hg
 
  
121/70 mm Hg
 
The suggested mean blood pressure for an 8- to 9- year-old child is 106/58 mm Hg. For a child of 6 to 7 years old, 104/55 mm Hg is appropriate; for a 12- to 13-year-old child, 112/62 mm Hg is appropriate, and for a 16- to 18-year-old young man, 121/70 mm Hg is appropriate.
 
Question 3

Which is an example of an endogenous antigen?
  
Yeast
 
Correct!
  
Cancer cells
 
  
Fungus
 
  
Bacteria
 
Of the options provided, endogenous antigens include only those uniquely produced by cancerous cells.

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NR 507 PATHO FINAL EXAM
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  • Submitted On 15 Feb, 2020 12:12:43
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Question 1 What period follows depolarization of the myocardium and represents a period during which no new cardiac potential can be propagated? Correct!    Refractory      Threshold      Sinoatrial (SA)      Hyperpolarization   During the refractory period, no new ...
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