What was the effect of increasing flow tube radius on flow volume?
What was the effect of increasing flow tube radius on flow volume?
If the length of the vessel increases then the flow will decrease, but if the radius increases then the flow will increase. Blood flow increases, resistance decreases and the pump rate increases when the right flow tube radius is increased.
What happened to fluid flow as the radius of the flow tube was increased?
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 decreasing the pump rate. The flow rate in the pump would increase, thus increasing the pump rate.
What do you think will happen to the flow rate if the radius is increased by .5 mm?
What do you think will happen to the flow rate if the radius of the tube is increased by 0.5 mm? The flow rate will increase. Explain how the body establishes a pressure gradient for fluid flow. All fluids move from an area of higher fluid pressure to an area of lower fluid pressure.
What effect does tube radius have on resistance?
For example, if the radius of the tube doubles, the resistance decreases by a factor of 16.
Which of the following has the greatest effect on blood flow?
Which of the following has the greatest effect on blood flow? You correctly answered: blood vessel radius.
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.
Why does changing vessel radius have the greatest effect on blood flow?
Blood vessel radius is more likely to change because blood vessel length tends to stay pretty constant. Explain the effect that the changes in blood vessel length had on flow rate? The longer the vessel length, the greater the resistance, therefore increasing the vessel length decreases flow rate.
What do you think will happen to the flow rate if the radius is increased by 0.5 mm quizlet?
What do you think will happen to the flow rate if the radius is increased by 0.5 mm? The flow rate will increase.
How does radius affect pressure?
The more viscous a fluid, the greater the pressure gradient required to cause it to move through a given tube. Because the resistance of the flow is inversely proportional to the fourth power of the radius, small decreases in the radius of a tube cause profound decreases in the flow of the fluid through the tube.
Which has the greatest effect on peripheral resistance?
Radius of the arterioles is the most important factor, affecting vascular resistance, and it is regulated by systemic and local factors: Systemic factors include: Arterial baroreflex control (increased BP leads to a decrease in SVR. Peripheral and central chemoreceptors (hypoxia leads to increased SVR)
Which viscosity had the fastest flow rate?
46 Cards in this Set
| How does the body decrease the blood vessel radius? | vasoconstriction |
|---|---|
| Which viscosity had the fastest flow rate? | 1 |
| What is the typical range for viscosity of the blood? | 3-5 |
| Increasing blood vessel length _______. | has the same effect as decreasing blood vessel radius and increases resistance to flow |
What is the relationship between blood viscosity and blood flow?
A close inverse correlation exists between changes in viscosity and blood flow, the change in blood flow being about three times greater than the change in blood viscosity.
How does the radius of a tube affect resistance?
The radius r of a tube affects the resistance, which again makes sense, because the greater the radius, the greater the flow (all other factors remaining the same). But it is surprising that r is raised to the fourth power in Poiseuille’s law. This exponent means that any change in the radius of a tube has a very large effect on resistance.
What happens when the length of the tube increases?
(an increase in the length of the tube will result in an increase in resistance, if driving pressure is unchanged then flow will decrease; to maintain constant flow pressure will have to be increased) (if all other factors are held constant, and increase in the driving pressure will increase flowrate
When does the resistance to flow increase 2 fold?
Therefore, a vessel having twice the length of another vessel (and each having the same radius) will have twice the resistance to flow. Similarly, if the viscosity of the blood increases 2-fold, the resistance to flow will increase 2-fold.
How is the resistance to flow related to pressure?
This relationship can be stated as where P 1 and P 2 are the pressures at two points, such as at either end of a tube, and R is the resistance to flow. The resistance R includes everything, except pressure, that affects flow rate. For example, R is greater for a long tube than for a short one.