Deck 7: Effect of Extreme Environments on Immune Responses to Exercise

Question 1

Compared with exercise in thermoneutral conditions, exercise in hot conditions is associated with...

A) Cardiovascular drift
B) Increased circulating stress hormones and leukocytes
C) Increased reliance on fat as a fuel source
D) Both (a) and (b) are correct
E) All of the above are correct

Answer 1

D

Question 2

Tightly controlled laboratory studies show a reductive effect of exercise in the heat on...

A) Neutrophil function
B) Monocyte function
C) Lymphocyte function
D) Mucosal immunity
E) All of the above

Answer 2

C

Question 3

A fever is associated with an increase in endogenous pyrogens including...

A) IL-1, IL-6, and tumour necrosis factor-a
B) Cortisol
C) IL-1ra and tumour necrosis factor-a
D) Anti-LPS
E) Nuclear factor-kappa B

Answer 3

A

Question 4

Exertional heat stroke is a life threatening acute heat illness that occurs whenever core temperature exceeds 40°C during exercise.

Question 5

Hypothermia is defined as a core body temperature of...

A) Less than 35 degrees C
B) Less than 38 degrees C
C) Above 37 degrees C
D) 37 degrees C
E) None of the above is correct

Question 6

A modest reduction in core temperature can be immunostimulatory.

Question 7

A stress NOT found in high mountainous regions is...

A) Hypobaria
B) Hyperbaria
C) Hypoxia
D) Ultraviolet light
E) Cold

Question 8

Most human studies that have examined immune function at altitude have reported...

A) Decreased humoral immunity
B) Increased natural killer cell function
C) Decreased T cell-mediated immune function
D) Increased mucosal immunity
E) All of the above

Question 9

Limited studies show that air pollution causes...

A) Decreased mucosal immunity
B) Decreased natural killer cell function
C) Increased leukocytosis
D) Both (b) and (c) are correct

Question 10

Space flight is associated with...

A) Unaltered mucosal immunity
B) Lowered cell-mediated immunity
C) Increases in stress hormones on re-entry and landing
D) Leukocytosis on re-entry and landing
E) All of the above