Redistribution Of Blood

Question 1

Why do we need to redistribute blood during exercise?

Answer 1

Skeletal muscles need more oxygen so we need to redirect blood to them to meet the increased oxygen demand

This is called the vascular shunt mechanism

Question 2

What detects decrease in blood PH levels?

Answer 2

Chemoreceptors

Question 3

What is vasodilation?

Answer 3

The widening of the blood vessels to increase the flow of blood into the capillaries

Question 4

What is vasoconstriction?

Answer 4

The narrowing of the blood vessels to reduce blood flow into capillaries

Question 5

What do pre capillary sphincters do at digestive organs during exercise?

Answer 5

Close

Question 6

What do pre capillary sphincters do at muscles during exercise?

Answer 6

Open

Question 7

Why is redistribution of blood so important?

Answer 7

Increase the supply of oxygen to working muscles

Remove waste products

Ensure more blood goes to skin to regulate body temperature

Direct more blood to heart as it requires oxygen during exercise as it is a muscle