Question

During exercise, blood flow in the skin and finger pulp is usually reduced by sympathetic vasoconstrictor nerve activity. After exercise, however, skin and finger blood flow may be increased. Why is the blood flow to extremities reduced during exercise? Why does it increase to higher than normal levels during recovery? What other factors may influence the supply of blood to the skin and fingers during and after exercise?

Answer 1

ANSWER- The blood flow to the extremities is reduced during excercise to provide more blood to larger skeletal muscles,heart,lungs,liver,and kidneys that are involved in sustaining the muscular effort required for the excercise by providing nutrients and oxygen,and in the removal of wastes.

The blood flow to the extremities increases after excercise to dissipate the body heat that is generated during the excercise.

Other factors that may influence the supply of blood to the skin and fingers during and after excercise are hydration status,blood pressure,ambient temperature and humidity,diseases,prior training ,nature of excercise,etc.