Neurotransmitters like catecholamines (e.g., dopamine and ...

[notis]

Neurotransmitters like catecholamines (e.g., dopamine and epinephrine) have a reaction time of
 
  A)
  milliseconds.
  B)
  less than 10 minutes.
  C)
  24 to 36 hours.
  D)
  4 to 7 days.

Question 2

A 53-year-old woman with a history of chronic alcohol abuse but without visible jaundice comes to the clinic complaining of nausea and weakness.
 
  She admits to taking acetaminophen for persistent headaches but denies exceeding the recommended daily dose; she has not taken any other medications. She is suspected of having acetaminophen toxicity. Which of the following diagnostic test findings would implicate a different cause of her symptoms?
  A)
  Normal serum acetaminophen level
  B)
  Elevated serum HBsAg level
  C)
  Evidence of steatosis on liver biopsy tissue sample
  D)
  Hypoglycemia

[ergserg]

Answer to Question 1

Ans:
A

Feedback:

The neurotransmitters, which control the opening of ion channels, have a reaction time of milliseconds.

Answer to Question 2

Ans:
B

Feedback:

The presence of HBsAg would suggest that this woman is in the prodromal phase of hepatitis B infection. A normal serum acetaminophen level does not preclude toxicity if the drug is taken over a period of time. Steatosis is fatty infiltration of the liver. Steatosis is often but not exclusively an early histological feature of alcoholic liver disease (therefore, with chronic alcohol abuse, the nurse should expect the patient may have steatosis). Drinking heavily without eating can block your liver from releasing stored glucose into your bloodstream, causing hypoglycemia.