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WorksheetsExercise Physiology - Cardiovascular
Total questions: 18
Worksheet time: 11mins
How blood flow is redistributed when exercising (pick 2)
arterioles vasodilate to direct blood to active muscles
veins will vasodilate so blood goes to digestive system
arteries will send blood to the brain
arterioles vasoconstrict to direct blood away from inactive organs
what is the effect of Starling's Law on stroke volume (pick 2)
venous return (blood back to heart) increases
cardiac output lowers with less blood
stroke volume will increase as more blood fills the heart
stroke volume will decrease
what is starlings law?
when we breath in deeper we breath out harder
As the heart fills with blood it wont pump harder
As the heart fills with more blood it will force the blood out faster
diastolic and systolic is the same
what is systole and diastole (pick 2)
systole is when the heart forces blood in to the atria
diastole is when the heart contracts
diastole is when the heart is relaxed and fills with blood
systole is when the ventricles contract and force blood out
what is the effect of capillarisation on diffusion rate in the working muscles
more capillaries decreases the exchange of gases in the muscle
less capillaries will help diffusion
more capillaries will increase gas exchange and diffusion in the muscle
more capillaries will have no effect in the diffusion rate
what will happen to blood pressure during isometric contraction
increases
decreases
no change
which response occurs first in the body when we exercise
heart rate lowers
anticipatory rise from adrenaline
blood pressure increases
adrenaline lowers
What is the equation for cardiac output
CO = BP x BR
Q = HR x TV
Q = SV x HR
CO = HR x SV
why does blood flow change during exercise (pick 2)
increase delivery of O2 to working muscles
decrease stroke volume
removal of CO2/waste from the muscles
decrease breathing rate
Functions of the CV system (pick 3)
Directs blood
Transports O2 and nutrients
helps us breath faster
removes waste products
slows down the brain
what is stroke volume
volume of blood per minute
volume of air per minute
volume of blood per beat
volume of blood and air per minute
what is cardiac output
volume of blood per minute
volume of air per minute
volume of blood per beat
volume of blood and air per minute
when the heart rate is lower than 60bpm this is known as
tachycardia
sinus arrhythmia
wave summation
bradycardia
when the heart rate is higher than 100 this is known as
tachycardia normal in exercise
sinus arrhythmia normal in exercise
wave summation
bradycardia normal for athletes
Resistance to blood flow is a combination of... (pick 2)
thickness of blood
low breathing rate
size of blood vessels
high respiratory reserve volume
what do baroreceptors detect
chemicals
hormones
pressure
temperature
A signal being sent down the parasympathetic nervous system to the heart will...
speed up the heart
speed up breathing rate
slow down the heart rate
reduce blood resistance
What is Arteriovenous oxygen difference (a-VO2 diff)
difference of blood flow in the muscle
difference of blood O2 in the arterial blood compared to the venous blood
difference of CO2 entering and leaving the lungs
difference of lactic acid in the muscle before and after
