During periods of increased physical activity, large veins contract to divert blood from its venous reservoir to the skeletal muscles to help fuel the increased levels of activity.

Question

Quizplus · Accepted Answer

This is true. During exercise, the sympathetic nervous system activates the smooth muscle in large veins, causing them to constrict and divert blood to the skeletal muscles. This helps to increase oxygen and nutrient delivery to fuel the increased levels of activity.

During Periods of Increased Physical Activity, Large Veins Contract to Divert