The Volume In The Pump When The Pump Piston Is All The Way Down Represents The _______.

When the flow tube radius increased ___?

46 Cards in this Set
How does the body decrease the blood vessel radius? vasoconstriction
The volume in the pump when the pump piston is all the way down represents the _______. end systolic volume
When the flow tube radius increased _______. resistance decreased and pump rate increased to maintain pressure

What happened to the fluid flow rate as the radius of the flow tube was increased?

Studying the Effects of Flow Tube Length on Fluid Flow. … what would happen to the flow rate and the pump rate if the left flow tube radius is increased? the flow rate in the pump would increase thus increasing the pump rate. Studying the Effect of stroke volume on pump activity.

What happened to the pump rate when you increase the stroke volume?

When the stroke volume increased the pump rate increased to maintain the cardiac output. This is because stroke volume and pump rate are the two factors that contribute to the calculation of cardiac output. (If one increases the other must decrease and vice versa.)

What happens to fluid flow when the right beaker pressure equals the pump pressure?

What happens when right beaker pressure is equal to pump pressure. decrease in pump rate causes linear decrease in stroke volume. The opposition to blood flow resulting from the friction developed as blood streams throught vessels.

Which law states that stroke volume is determined by the end diastolic volume?

According to Starling’s law of the heart a change in preload approximated by the end diastolic volume and determined by the venous return of blood to the heart directly results in a change in stroke volume defining myocardial function.

Which tube has the greatest flow?

3. Which is more important for determining flow through a tube: absolute pressure or the pressure gradient? Tube C has the highest flow because it has the largest radius of the four tubes (less resistance) and the shorter length (less resistance).

How do I calculate flow rate?

Q=Vt Q = V t where V is the volume and t is the elapsed time. The SI unit for flow rate is m3/s but a number of other units for Q are in common use. For example the heart of a resting adult pumps blood at a rate of 5.00 liters per minute (L/min).

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What is the relationship between fluid flow and flow tube length?

What is the relationship between fluid flow and flow tube length? You correctly answered: They are inversely proportional to each other.

What did you notice about the flow rate as the vessel radius increased?

Explain the effect that the flow tube radius change had on flow rate? As the radius increases the flow will also increase. When radius decreases the flow decreases.

What happens to the pump rate when stroke volume is decreased?

What do you think would happen when stroke volume is decreased? Pump rate would increase. Why might an athlete’s resting heart rate be lower than that of the average person? Stroke volume and contractility have increased.

What is the relationship between stroke volume and pump rate quizlet?

When stroke volume increased pump rate increased. They are directly proportional.

What would happen when stroke volume is decreased?

A decrease in stroke volume decreases the amount of blood in the arterial system decreasing the diastolic blood pressure. What happens in our body: When heart rate is decreased stroke volume increases to maintain cardiac output.

How does driving pressure affect fluid flow?

An increase in driving pressure results in decreased fluid flow. Changes in driving pressure do not have any effect on fluid flow. An increase in driving pressure results in increased fluid flow. A decrease in driving pressure results in increased fluid flow.

What can you conclude about the relationship between radius and flow?

Increase in radius causes increase in blood flow rate.

What is the relationship between vessel radius and blood flow rate?

Therefore blood flow is strongly proportional to the vessel radius. As the radius of the vessel lumen increases (called vasodilation) blood flow increases dramatically and vice versa [1].

What increases end-diastolic volume?

Enlargement of the heart muscle can cause the ventricle walls to thicken causing a condition called hypertrophic cardiomyopathy. This thickening can affect blood flow out of the left ventricle which can lead to an increase in end-diastolic volume.

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Why is Starling’s law important?

The functional importance of the Frank-Starling mechanism lies mainly in adapting left to right ventricular output. During upright physical exercise an increase in end-diastolic volume due to the action of the peripheral muscle pump and increased venous tone can assist in enhancing stroke volume.

What does Starling’s law state?

The Frank-Starling Law states that the stroke volume of the left ventricle will increase as the left ventricular volume increases due to the myocyte stretch causing a more forceful systolic contraction. This assumes that other factors remain constant.

What is flow tube?

PetroWiki. Tubes with a diameter slightly larger than the braded wireline or slick line that are used in the “stuffing box” on a wireline intervention to isolate the well pressure and fluid from the atmosphere. They work in combination with oil or wireline grease injection to form a hydraulic seal.

What do veins do?

The arteries (red) carry oxygen and nutrients away from your heart to your body’s tissues. The veins (blue) take oxygen-poor blood back to the heart. Arteries begin with the aorta the large artery leaving the heart. They carry oxygen-rich blood away from the heart to all of the body’s tissues.

What is tube of flow in physics?

It is characterized by the flow of a fluid in parallel layers in which there is no disruption or interaction between the different layers and in which each layer flows at a different velocity along the same direction.

How do you calculate volume?

Whereas the basic formula for the area of a rectangular shape is length × width the basic formula for volume is length × width × height.

What is the formula of volume?

Perimeter Area and Volume
Table 3. Volume Formulas
Shape Formula Variables
Cube V=s3 s is the length of the side.
Right Rectangular Prism V=LWH L is the length W is the width and H is the height.
Prism or Cylinder V=Ah A is the area of the base h is the height.

What is the unit of volume flow rate?

In S.I. units (International System of Units) volume flow rate has units of meters cubed per second m 3 s dfrac{text m^3}{text s} sm3​start fraction start text m end text cubed divided by start text s end text end fraction since it tells you the number of cubic meters of fluid that flow per second.

What is the relationship between fluid flow and viscosity?

What is the relationship between fluid flow and viscosity? the higher the viscosity the slower the flow rate. they are inversely proportional to one another.

Which of the following describes the relationship between fluid flow and vessel radius?

Blood vessel radius is inversely proportional to resistance and directly proportional to blood flow.

What is the relationship between vessel diameter and resistance?

In blood vessels most of the resistance is due to vessel diameter. As vessel diameter decreases the resistance increases and blood flow decreases.

Why is vessel radius a more important factor?

In contrast an increase in radius will reduce resistance. Furthermore the change in radius alters resistance to the fourth power of the change in radius. For example a 2-fold increase in radius decreases resistance by 16-fold! Therefore vessel resistance is exquisitely sensitive to changes in radius.

How do you calculate flow rate in physiology?

The relationship between pressure flow and resistance is expressed in the following equation: Flow = Pressure/Resistance.

What are the intrinsic factors that control stroke volume?

Preload and contractility are the two intrinsic factors that affect stroke volume. Preload is a significant factor that augments cardiac output and increases by increasing venous return.

What determines stroke volume?

Stroke volume index is determined by three factors:
  • Preload: The filling pressure of the heart at the end of diastole.
  • Contractility: The inherent vigor of contraction of the heart muscles during systole.
  • Afterload: The pressure against which the heart must work to eject blood during systole.

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What happens to the flow rate when you increase the arterial pressure?

If you increase pressure in the arteries (afterload) and cardiac function does not compensate blood flow will actually decrease. In the venous system the opposite relationship is true. Increased pressure in the veins does not decrease flow as it does in arteries but actually increases flow.

How does the heart alter stroke volume?

Stroke volume is intrinsically controlled by preload (the degree to which the ventricles are stretched prior to contracting). An increase in the volume or speed of venous return will increase preload and through the Frank–Starling law of the heart will increase stroke volume.

How does EDV and ESV affect stroke volume?

In a typical heart the EDV is about 120 mL of blood and the ESV about 50 mL of blood. The difference in these two volumes 70 mL represents the SV. Therefore any factor that alters either the EDV or the ESV will change SV. For example an increase in EDV increases SV whereas an increase in ESV decreases SV.

Thermodynamics – A-level Physics

Animation – How an axial flow variable displacement piston pump works.


Example Problem – Weight on a Piston Head

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