03-26-2007, 02:25 PM
During a marathon, a 28-year-old woman initially has pain and distress but suddenly feels exhilaration about halfway through the race. The best explanation is most likely to be increased release of..
A) ACTH
B) β-endorphin
C) epinephrine
D) glucagon
E) somatostatin
A) ACTH
B) β-endorphin
C) epinephrine
D) glucagon
E) somatostatin