A. False It normally increases ten to fifteen-fold in a fit individual.
B. False It is caused by cardiac output not rising sufficiently to compensate for the fall in peripheral resistance due to the skin vasodilation.
C. False Unlike heat syncope, heat stroke is likely to be fatal unless treated promptly and effectively.
D. True Due to the development of more efficient heat-losing mechanisms.
E. False Six weeks gives useful and fairly complete adaptation.