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Questions and Answers
What happens to capillary blood flow during exercise?
What happens to capillary blood flow during exercise?
- Venous blood is diverted away from capillaries
- Precapillary sphincters close to conserve nutrients and oxygen
- Precapillary sphincters open to allow most nutrients and oxygen to fuel (correct)
- Capillaries shrink in size to reduce blood flow
What is the role of valves in veins?
What is the role of valves in veins?
- Prevent backflow of blood and do not hinder normal one-way flow (correct)
- Prevent frontflow of blood but not backflow
- Hinder normal one-way flow but facilitate backflow
- Promote backflow of blood to increase circulation
Where do veins in the lower body empty into?
Where do veins in the lower body empty into?
- Aorta
- Inferior vena cava (correct)
- Pulmonary artery
- Superior vena cava
What happens to blood pressure during resistance exercise?
What happens to blood pressure during resistance exercise?
What contributes to changes in blood pressure response during physical activity?
What contributes to changes in blood pressure response during physical activity?
What is the role of the precapillary sphincter in capillaries?
What is the role of the precapillary sphincter in capillaries?
Which factor triggers the relaxation of the precapillary sphincter to open more capillaries?
Which factor triggers the relaxation of the precapillary sphincter to open more capillaries?
In which type of vessel do metarterioles end in?
In which type of vessel do metarterioles end in?
What is the composition of the capillary wall?
What is the composition of the capillary wall?
Which component of a blood vessel contains 6% of the total blood volume?
Which component of a blood vessel contains 6% of the total blood volume?
Why does systolic blood pressure (SBP) often decrease as steady-rate exercise continues?
Why does systolic blood pressure (SBP) often decrease as steady-rate exercise continues?
Why does arm-based exercise tend to increase systolic blood pressure (SBP) and diastolic blood pressure (DBP) compared to leg exercise at the same percentage of VO2max?
Why does arm-based exercise tend to increase systolic blood pressure (SBP) and diastolic blood pressure (DBP) compared to leg exercise at the same percentage of VO2max?
What contributes to the massive decrease in systolic blood pressure (SBP) observed during exercise recovery?
What contributes to the massive decrease in systolic blood pressure (SBP) observed during exercise recovery?
How does the activation of arterioles in active muscles impact peripheral resistance during exercise?
How does the activation of arterioles in active muscles impact peripheral resistance during exercise?
Why is it recommended for individuals with cardiovascular dysfunction to rhythmically exercise larger muscle groups rather than limited muscle mass exercises?
Why is it recommended for individuals with cardiovascular dysfunction to rhythmically exercise larger muscle groups rather than limited muscle mass exercises?
How does an increase in capillary blood flow affect the venous system components during exercise?
How does an increase in capillary blood flow affect the venous system components during exercise?
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