If I took a drug that blocked my ability to vasoconstrict my

If I took a drug that blocked my ability to vasoconstrict my splanchnic vascular bed during heavy exercise, what would be the effect on my ability to selectively deliver blood to the exercising muscles?

a. improve

b. get worse

c. not change

Solution

Answer is option B. Get worse.

As the ability to constrict blood vessels supplying blood to the abdominal organs ceases, blood cannot be directed to the muscles of exercise.