WorksheetsAdaptations of the Cardiovascular System to Exercise
Total questions: 10
Worksheet time: 5mins
What is cardiac hypertrophy?
Enlargement of the lungs
Thickening of the heart muscle
Increase in blood pressure
Expansion of blood vessels
Which part of the heart acts as the natural pacemaker?
Atrioventricular node
Sinoatrial node
Bundle of His
Purkinje fibers
During the cardiac cycle, what happens in systole?
Heart chambers fill with blood
Heart muscle relaxes
Heart muscle contracts and pumps blood
Blood pressure decreases
Cardiac output is calculated using which formula?
HR ÷ SV
HR × SV
SV ÷ HR
HR + SV
Which adaptation occurs in blood pressure due to regular aerobic exercise?
Increased resting systolic pressure
Increased resting diastolic pressure
Lower resting blood pressure
No change in blood pressure
What happens to stroke volume as a result of cardiac hypertrophy?
It decreases
It stays the same
It increases
It fluctuates randomly
Which of the following is a change in blood composition due to exercise?
Decrease in plasma volume
Increase in red blood cells and hemoglobin
Reduction in oxygen-carrying capacity
Increase in lactic acid at rest
What is the main benefit of increased diffusion rate in the lungs?
Faster removal of waste products
Slower oxygen uptake
Improved gas exchange efficiency
Reduced capillarisation
Which adaptation helps endurance athletes maintain a lower resting heart rate?
Increased sympathetic activity
Increased parasympathetic tone
Reduced stroke volume
Higher blood pressure
Why does cardiac output increase during exercise?
Heart rate decreases
Stroke volume decreases
Both heart rate and stroke volume increase
Blood pressure decreases
