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Cardiac Function Quiz

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Questions and Answers

Which of the following adaptations occurs with training?

Increase in stored ATP and PCr (correct)

Decrease in mitochondrial VO2max

Decrease in ATP production from fuels

Increase in O2 deficit and EPOC

What is the net ATP produced from one molecule of glucose during Beta-oxidation?

-2 ATP

8 ATP

24 ATP (correct)

4 ATP

Which of the following statements about detaining is true?

Detraining leads to the greatest improvement with training

Detraining leads to an increase in VO2max

Aerobic loss is greater than anaerobic loss (correct)

Detraining has no effect on aerobic and anaerobic capacity

Which of the following equations represents the ejection fraction (EF)?

$EF = rac{SV}{EDV}$ Signup and view all the answers

What is the average ejection fraction (EF)?

54% Signup and view all the answers

Which of the following is NOT a factor that can cause a decrease in stroke volume (SV) during exercise?

Increased heart rate Signup and view all the answers

What is the formula for calculating the heart rate-pressure product (RPP)?

$RPP = SBP \times HR$ Signup and view all the answers

Which of the following factors contributes to an increase in stroke volume?

Preload Signup and view all the answers

What is the formula for calculating cardiac output?

Q = SV x HR Signup and view all the answers

Which phase of the cardiac cycle is characterized by the heart being contracted and blood being pumped out of the ventricles?

Systole Signup and view all the answers

What is the main function of the respiratory pump in the cardiovascular system?

To increase venous return Signup and view all the answers

According to Poiseuille's Law, which factor has the greatest influence on blood flow rate?

Vessel diameter Signup and view all the answers

Which of the following statements about resistance and flow is true?

If pressure increases, resistance will increase. Signup and view all the answers

Which of the following factors contribute to vasodilation during exercise?

Sympathetic nervous system Signup and view all the answers

What is the relationship between shear stress and viscosity?

Shear stress and viscosity are inversely proportional. Signup and view all the answers