Short-Term Effects of Exercise 2 Flashcards
(14 cards)
what is the formula for cardiac output
cardiac output = heart rate x stroke volume
what is heart rate
the number of times your heart beats per minute
what is stroke volume
the amount of blood each ventricle pumps with each contraction
what is cardiac output
the volume of blood pumped by a ventricle per minute
what is systolic blood pressure
the pressure of your blood as your heart beats increases
what does an increase in cardiac output do
increases the blood and oxygen supply to your muscles so energy can be released and carbon dioxide can be removed to the lungs where it is breathed out
what happens until an oxygen debt is repaid
your heart rate, stroke volume and cardiac output will remain higher than normal
what happens when you exercise with a high intensity
your heart rate, stroke volume and cardiac output will be higher than if you were doing light exercise
why is blood redistributed around the body
to increase the supply of oxygen to your muscles
why do your arteries widen during exercise
to stop blood pressure getting too high and to move blood to the muscles that would usually go to the organs
what is vasodilation
blood is moved to the muscles so blood vessels serving muscles need to widen to let in more blood
what is vasoconstriction
blood is moved to the muscles so blood vessels serving inactive organs need to restrict the amount of blood that can flow in
what happens when your muscles work
they generate heat which warms your blood and moves blood closer to your skin so you start to sweat and cool as you lose heat through radiation
how does intense exercise affect blood distribution
the harder you exercise more blood moves to your working muscles compared to light exercise when less blood moves to your muscles
