18 Questions
What is the purpose of instructing a patient to take several deep, long breaths before standing after bed rest?
To prevent orthostatic hypotension
What is the benefit of endurance training on the heart?
It leads to beneficial cardiac hypertrophy
Why are trained athletes typically bradycardic at rest?
Because of the Frank-Starling law
What is a result of regular strength training on the heart?
Cardiac muscle hypertrophy
What is the result of endurance training on heart size?
It increases heart size
Why do athletes typically have low resting heart rates?
Because of increased stroke volume
What is the name of the law that explains how the heart adapts to changes in blood volume?
The Frank-Starling law
What is the effect of strength training on cardiac output during exercise?
It increases cardiac output dramatically
What is the relationship between stroke volume and heart rate in determining cardiac output?
Cardiac output is the product of stroke volume and heart rate
What is the goal of regulating cardiac output?
To maintain adequate blood flow to tissues
What is a benefit of increased cardiac output during exercise?
Rapid perfusion of tissue during exercise
What is the result of increased stroke volume in athletes?
Decreased heart rate at rest
What is the primary reason for an increase in myocardial oxygen consumption (MVO2)?
Increased cardiac effort
What is the result of pathological cardiac hypertrophy on the heart?
Increased afterload
How does the heart increase oxygen delivery to cardiac cells during strenuous exercise?
By increasing laminar flow rate
What is a consequence of atherosclerosis on blood vessels?
Increased arterial wall friction
What is an advantage of the slow velocity of blood along the vessel walls?
It allows for more diffusion time
What happens to blood flow when it increases in velocity through smooth blood vessels?
It moves fast along the center and slowly along the walls
This quiz covers the effects of regular strength training on the heart, including increased stroke volume and decreased heart rate. It also explains why athletes tend to have lower resting heart rates and faster recovery times.
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