During exercise, a modification of the cardiovascular system involves the redirection of blood from organ systems to skeletal muscles. What percentage of blood flow normally goes toward muscles and to what percent does this increase during exercise?
a. normal 10% exercise elevates to 75%
b. normal 15%, exercise elevates to 85%
c. normal 20%, exercise elevates to 85%
d. normal 25%, exercise elevates to 90%
Answer: C