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This rather depends upon whether you are considering either the human heart, or a cylinder in a combustion engine. Though the concepts are roughly similar.
In the case of the combustion engine, the stroke volume is bore area x stroke length. In a given engine we cannot increase the stroke, for this is determined by the overall engine design. But the bore of the cylinders can be increased slightly to give a larger volume, and hence a slightly higher output.
Another trick is to minimize the 'dead space' at the top of the cylinder, and occasionally, the cylinder head may be slightly planed, and either of these modifications will increase the compression ratio. These modifications can only be undertaken by a person well-informed on engine behavior. And your engine warranty is invalidated.
In the case of the human heart, stroke volume is the difference in volume of the heart ventricle, between maximum capacity and minimum capacity. (diastolic volume minus systolic volume.) For an ordinary man this will be in the vicinity of 70mL.
This may be increased over time by aerobic exercise. This will often be accompanied by a decrease in resting pulse rate. This may be due to a greater elasticity of the heart muscle, or by an increase of the actual volume of the ventricle itself. Scleroses will have a deleterious effect. Both ventricles will, obviously, have a similar volume.
(A very fit friend, had a rest pulse rate of less than 30/min - a cause of momentary concern when he was admitted to ER after a minor work accident!)
What else can I help you with?
What effect does an increase in temperature have on a gas's volume and pressure?
As indicated by the Ideal Gas Laws, increasing temperature will tend to increase both volume and pressure. Of course, volume can't always increase, that depends upon the flexibility or inflexibility of the container that the gas is in, and if the volume does increase that will counteract the increase in pressure that would otherwise have happened. Temperature, pressure, and volume are all interconnected in a gas.
If the volume of an object increases what will the density do?
If the volume of the object increases while its mass remains constant, the density of the object will decrease. This is because density is calculated by dividing mass by volume, so if volume increases and mass stays the same, the resulting density will be lower.
If you squeezed a balloon and made it smaller would the density in the air would become greater?
Yes. When you squeeze the balloon, you cause the volume to decrease. Since density is determined by dividing mass by volume, a decrease in volume will cause an increase in denisty.
If you increased the mass of an object would its volume change?
Increasing the mass of an object does not necessarily change its volume if the density remains constant. However, if the density of the object changes as a result of the increase in mass, then the volume would also change.
What would you do to the volume of a gas to reduce its pressure to one quarter of the original value?
To reduce the pressure of a gas to one quarter of its original value, you would need to increase the volume of the gas by a factor of 4. This can be achieved by expanding the container or increasing the space available to the gas while keeping the temperature constant. Following Boyle's Law, pressure is inversely proportional to volume when temperature is constant.
Would an increase in contractility cause an increase to cardiac output?
Yes - an increase in contractility would lead to an increase in stroke volume. An increased stroke volume would cause an increased cardiac output.
Which of the following would cause the greatest increase in cardiac output?
Increased heart rate and increased stroke volume
What would happen to cardiac output if the stroke volume increased and the heart rate stayed the same?
Since the stroke volume increased then the cardiac out put would increase, pumping out more blood with the same amount of heart beats.
Would stroke volume increase or decrease if your unhealthy?
Stroke volume can decrease if you are unhealthy. Health conditions such as heart failure, heart disease, or dehydration can negatively affect the heart's ability to pump blood effectively, leading to a decrease in stroke volume.
How does crank angle effect volume of cylinder?
The crank angle would change the stroke. The stroke would change the volume.
Why would an increase in stroke volume lead to a drop in resting heart rate?
I may be guessing here but I am thinking with an increase in stroke volume you body is getting more volume per beat ... therefore it compensates by lowering the heart rate. if your pump is more efficient then you body doesn't need your heart to pump as often. That's the only rationale i can think would cause it!
Why would stroke volume increase in a soccer game?
because more blood in needed for the muscles
How would increase venous return affect EDV?
Increasing venous return would increase end-diastolic volume (EDV) by filling the ventricles with more blood before contraction. This increased preload would stretch the myocardium further, leading to a more forceful contraction and increasing stroke volume.
What would cause an increase in blood volume and why?
An increase in salt intake or retention, dehydration, excessive fluid intake, or a condition like heart failure can lead to an increase in blood volume. This can result in elevated blood pressure and increased workload on the heart, potentially leading to complications like heart failure or stroke.
When the volume of gas decreases would the pressure increase or decrease?
It would increase.
How would a decrease in blood volume affect both stroke volume and cardiac output?
It's decreased ... unless the rate falls, which is the normal cardiac response.
If the temperature of a gas were to increase would the volume increase?
no the presure would become greater unless the contianer became larger the volume would stay the same
