Final exam multiple choice Flashcards
Which of the following is true regarding blood flow and how it changes during acute exercise?
At rest, 60% of blood flow is sent to the viscera and 40% to the muscle
During exercise, 60-80% of blood flow is sent to the muscle and 15% to the skin, with 5% or less sent to the rest of the body
This is a voluntary change.
Vasoconstriction in the skeletal muscles leads to increased skeletal muscle blood flow during exercise
During exercise, 60-80% of blood flow is sent to the muscle and 15% to the skin, with 5% or less sent to the rest of the body
Factors in muscle that influence force development include:
Muscle length
Speed of contraction <br></br> -
Size of the muscle <br></br> -
Angle of the joint <br></br> -
All of the above <br></br> -
A, B, and D only
All of the above
Functions of the cardiovascular system include (CHOOSE ALL CORRECT ANSWERS): <br></br> -
Removal of CO2 and other metabolic waste products <br></br>
- Production of hormones to control the sympathetic nervous system <br></br> -
Thermoregulation <br></br>
Body fluid balance
Removal of CO2 and other metabolic waste products, Thermoregulation, Body fluid balance
Which of the following is/are true about steady-state heart rate? (CHOOSE ALL CORRECT ANSWERS): <br></br> -
It takes 15 minutes to reach steady-state heart rate <br></br> -
It is defined as “the plateau in HR that is reached during a set workload of exercise” <br></br> -
It will not change in a controlled climate <br></br> -
It is subject to cardiovascular drift
It is defined as “the plateau in HR that is reached during a set workload of exercise” and It is subject to cardiovascular drift
Which of the following is/are true regarding the acute heart rate response to exercise? (CHOOSE ALL CORRECT ANSWERS): <br></br> -
There is a positive, curvilinear relationship between workload and heart rate <br></br> -
Heart rate increases as workload increases <br></br> -
No variability exists between individuals regarding the acute heart rate response to exercise <br></br> -
The increase in heart rate with increasing power output on a cycle ergometer and increasing O2 uptake is linear within a wide range – that is, participants will all show increases in heart rate, but to varied extents
Heart rate increases as workload increases, and The increase in heart rate with increasing power output on a cycle ergometer and increasing O2 uptake is linear within a wide range – that is, participants will all show increases in heart rate, but to varied extents
Which of the following is/are true regarding stroke volume and its response to acute exercise? (CHOOSE ALL CORRECT ANSWERS): <br></br>
Stroke volume increases linear to work rate in the early stages of exercise, and plateaus during higher-intensity exercise <br></br>
The increase in heart rate during exercise leads to increased filling time, resulting in a higher stroke volume with higher intensities of exercise <br></br>
During exercise, the ventricles contract more powerfully and enlarge, increasing volume <br></br>
Dehydration during exercise leads to increased stroke volume
Stroke volume increases linear to work rate in the early stages of exercise, and plateaus during higher-intensity exercise
