PCS67-253_Post-test_Cardiovascular responses to exercise

During exercise, which of the following factors are increased, EXCEPT?

• Heart rate

• Systolic blood pressure

• Diastolic blood pressure

• Vascular resistance in GI tract

Blood flow to contracting muscle increases during exercise due to ....................

• Decreased heart rate

• Increased cardiac output

• Decreased arterial blood pressure

• Increased vasoconstriction

Which reflex responds primarily to changes in arterial blood pressure?

• Chemoreceptor reflex

• Baroreceptor reflex

• Deep Tendon Reflex

• Thermoreceptor reflex

During dynamic exercise, what happens to systolic and diastolic blood pressure?

• Both increase equally

• Systolic increases, diastolic decreases or remains unchanged

• Systolic decreases, diastolic increases

• Both decrease

In static exercise, which change is most characteristic?

• Decreased total peripheral resistance

• Increased venous return

• Decreased mean arterial pressure

• Increased diastolic pressure

During aerobic exercise, the primary energy source after 30 minutes is ........................

• Phosphocreatine

• Blood glucose

• Fat oxidation

• Anaerobic glycolysis

Which of the following does not typically increase during exercise?

• Total peripheral resistance

• Cardiac output

• Heart rate

• Oxygen consumption

The Frank–Starling mechanism enhances stroke volume during exercise by ................................

• Increasing end-systolic volume

• Increasing myocardial fiber stretch

• Decreasing ventricular filling

• Decreasing venous return

What happens to pulse pressure during dynamic exercise?

• It remains unchanged

• It decreases significantly

• It increases

During intense muscle contraction, local blood flow is temporarily reduced because .................................

• Increased heart rate

• Decrease in venous return

• Increased vascular compliance

• Compression of intramuscular vessels