Critical Thinking Exercise, you will answer the following questions using your critical thinking and reasoning skills. Because this is a critical thinking exercise, it is important that you do your best to evaluate and assess the discussion without bias or judgment.  You are expected to properly cite in APA format, but do not use direct quotations. Be as thorough as possible when writing your Critical Thinking Exercise topic/posts, and remember, this is an academic assignment, so no text-talk, no conversational tone. 

PART A
On April 26, 1986, Reactor 4 at the Chernobyl Nuclear Power Station in Ukraine exploded, releasing radioactive isotopes into the air. The majority of the isotopes that were released and spreading thousands of miles were of the element iodine. As a class, discuss what endocrine glands would be most affected and how it would become apparent in the nearby population.
Part B
1. In relation to homeostasis, explain why a person with toxic goiter tends to sweat profusely.
2. Explain how the action of a peptide hormone is similar to the action of the neurotransmitter norepinephrine