WorksheetsCVS and RESPI to exercise
Total questions: 20
Worksheet time: 13mins
What is the main role of the A-vO2 difference during exercise?
What happens to plasma volume during the first 5 minutes of exercise?
Increases rapidly
Remains stable
Decreases rapidly
Decreases gradually
What triggers an increase in coronary blood flow during exercise?
Decrease in perfusion pressure
Coronary vasoconstriction
Increase in sympathetic nervous system stimulation
Decrease in myocardial oxygen use
How does vasodilation in active muscles affect blood flow?
Decreases blood flow
Increases resistance
Increases blood flow
Decreases oxygen availability
Which type of muscle fibers are highly oxidative and fatigue-resistant?
Fast-twitch fibers
Slow-twitch fibers
FTb fibers
FTa fibers
At rest, approximately what percentage of oxygen is extracted from each unit of blood crossing myocardial capillaries?
25%
50%
70-80%
90%
How is blood flow redistributed during exercise?
Away from active skeletal muscles
Towards splanchnic organs
Towards the skin and active skeletal muscles
Away from the skin
What happens to pulmonary ventilation during the initial phase of exercise?
Decreases gradually
Remains unchanged
Increases almost immediately
Decreases immediately
During exercise, what percentage of cardiac output is directed to active skeletal muscles and skin?
20%
40%
60%
80%
Which type of muscle fiber has the lowest oxidative capacity?
Slow-twitch fibers
Fast-twitch FTa fibers
Fast-twitch FTb fibers
Slow-twitch Type II fibers
Which factor does not directly affect myocardial oxygen consumption?
Heart rate
Wall stress
Stroke volume
Myocardial contractility
Which of the following occurs during post-exercise hypotension?
Increased sympathetic activity
Lowered heart rate
Increased blood pressure
Decreased nitric oxide production
What causes the largest changes in blood pressure during exercise?
The initial 5 minutes of exercise
The last 5 minutes of exercise
Midway through the exercise session
After 10 minutes of exercise
Which type of exercise can cause an exaggerated blood pressure response?
Aerobic exercise
Light jogging
Resistance exercise
Swimming
What is the typical pulmonary ventilation rate at maximal work for large, highly trained male athletes?
100 liters per minute
150 liters per minute
200 liters per minute
250 liters per minute
Which hormone increases during vigorous exercise and affects coronary blood flow?
Insulin
Catecholamines
Glucagon
Cortisol
What is the impact of high-intensity resistance training on hypertensive patients?
Increases blood pressure significantly
Lowers blood pressure significantly
Has no impact on blood pressure
Decreases total peripheral resistance
Which of the following is a characteristic of slow-twitch muscle fibers?
High glycolytic capacity
Low oxidative capacity
Fast contractile speed
High mitochondrial content
What is the major determinant of myocardial oxygen consumption?
Blood volume
Heart rate
Venous return
Stroke volume
During high-intensity resistance exercise, what happens to total peripheral resistance (TPR)?
Decreases significantly
Remains unchanged
Increases
Slightly decreases
