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Examen
Exam 3 patho Questions & Answers William Paterson University
NuevoCHAPTER 21: Mechanisms of Hormonal Regulation 
1) Sensitivity of a target cell is down-regulated when the: 
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. level of hormone that binds with the receptor is high. 
. number of receptors for the hormone is high. 
. direct effects of the hormone are detected. 
. permissive effects of the hormone are detected. 
R: Target cells: Recognize/bind with high affinity to hormones; Initiate 
signal; more receptors = more sensitive 
-> Up-regulation: Low concentrations of hormones increase number...