Exogenous pyrogens are: a. interleukins. b. endotoxins. c. ...

[tatyanajohnson]

Exogenous pyrogens are:
 
  a. interleukins.
  b. endotoxins.
  c. prostaglandins.
  d. corticotropin-releasing factors.

Question 2

When a patient has a fever, which of the following thermoregulatory mechanisms is activated?
 
  a. The body's thermostat is adjusted to a lower temperature.
  b. Temperature is raised above the set point.
  c. Bacteria directly stimulate peripheral thermogenesis.
  d. The body's thermostat is reset to a higher level.

[mtmmmmmk]

Answer to Question 1

ANS: B
Exogenous pyrogens are endotoxins produced by pathogens. They are not interleukins, prosta-glandins, or corticotropin-releasing factors.

Answer to Question 2

ANS: D
Fever (febrile response) is a temporary resetting of the hypothalamic thermostat to a higher lev-el in response to endogenous or exogenous pyrogens. Fever is the result of the body's attempt to raise temperature, not adjust it to a lower level. When fever occurs, the temperature is raised, but the rise is due to a reset of the thermostat. Bacteria do not stimulate peripheral thermogenesis, but their endotoxins do.

[tatyanajohnson]

TYSM

[kishoreddi]

Gracias!