Redistribution Of Bloof During Exercise Flashcards
Where is blood directed when a body is resting
It’s directed to the organs
Wagers is blood directed when doing exercise
And why is this
Majority is directed towards the voluntary muscles
To ensure the working muscles are able to work as aerobically as they can which is more efficient
What two things are involved in the redistribution of blood during exercise
Vasoconstriction
Vasodilation
What happnes to blood vessels in vasoconstriction
And why is this
The internal diameter is narrowed to restrict the volume of blood traveling through it and this is so less blood while doing exercises is delivered to inactive areas
What do the arteries do in vasoconstriction
The constrict to stop blood
What happens to blood vessels in vasodilation
There internal diameter widens which increases the volume of blood flow
What happens to arteries in vasodilation
Wby is this
They dilate during exercise so more blood can flow through to the working muscles and areas which increases their oxygen supply
What is vascular shunting
What would happen without it
The redistribution of blood flow during exercise to help muscles work aerobically for more efficiency
Without it your muscles would be forced to work anaerobically causing lots of early fatigue
Define stroke volume
The volume of blood pumped out of the heart during 1 contraction
Define cardiac output
The volume of blood ejected from heart during 1 min
Give equation for cardiac output
Stroke volume x heart rate
What happens to blood in a cool down
The blood continues to flow quickly to muscles and it replenishes the Working muscles with oxygen
Therefore any lactic acid produced is converted into glucose, co2 or h20
What is a long term affect of exercise called
Cardiac hypertrophy
What is cardiac hypertrophy
When the heart size and strength increases
What are the advantages of getting a stronger heart and what does it result in
It can pump more blood per contraction which results in a higher stroke volume
The heart won’t have to work as hard and it is more efficient so the heart rate is also decreased
