The smaller blood vessel radius, the lesson blood or fluid flow. That is, shot to shot, summer to winter, machine to machine. Check out the numbers in the table accompanying the graph. In the blood flow equation as seen to the right , blood flow is directly proportional to the fourth power of vessel radius. You will have to add time to the cycle and that will kill your profit margin, so fix the tool. This keeps the shear rate the same. Thus, the presence of polycythemia would inversely affect blood flow rate by decreasing it.
In steady fluid flow, the velocity of the fluid is constant at any point. It must be emphazised that these types are an idealization of the real flow behavior of fluids. Typical Newtonian fluids incude water and thin motor oils. Laminar Flow is defined as the free-flowing blood in the middle of the vessel. When the pump pressure and the beaker pressure were the same, the valve would not open because there was insufficient driving pressure to force fluid out of the pump. Although the text and experiments have demonstrated that it is more effective to increase blood vessel diameter in order to increase the rate of flow within blood vessels, I think that exercise increases your heart rate which is directly linked to an increase in blood flow.
Blood Pressure can be affected by all three factors. The law states that the flow rate is equal to the pressure drop along the tube divided by the resistance to flow. Molecules or larger particles jump from one layer to another and dissipate a substantial amount of energy in the process. Diameter changes are easier for the body to change, pressure changes require the heart to be able to respond to a different force. We did this by using a spectrophotometer. Laminar Flow is defined as the free-flowing blood in the middle of the vessel.
We learned earlier that an increase in red blood cells results in an increase in blood viscosity. Describe the components in the blood that affect viscosity. Inspect each to see if there are any changes in appearance as you changed the fill time. Which is more likely to occur, a change in blood vessel radius or a change in blood vessel length? Describe the graph of flow versus viscosity. Once the particle network breaks down upon application of a critical yield stress τ y , the polymer shows normal flow behavior.
How do we measure cardiac output and at what clinical rate two points? The left beaker represents the side of the heart where blood is pumped through the lungs to the opposite side of the heart. This causes more than normal amounts of blood to be ejected by the heart which raises stroke volume. Polycythemia is an increase in the red blood cell numbers. Rheological measurements allow the study of chemical, mechanical, and thermal treatments, the effects of additives, or the course of a curing reaction. In addition, as the right flow tube radius increased, so did the pump rate.
Some of these characteristics reflect properties of the liquid itself, and others focus on how the fluid is moving. When you increase the stroke volume, there is an inverse decrease in pump rate, even though there is a constant amount of flow that results. Explain how the body establishes a pressure gradient for fluid flow. The questions in the Exploration section are the same questions in your CardioLab instructions. As viscosity increased, the flow rate decreased causing a linear or inverse curve relationship going down.
Describe the components in the blood that affect viscosity 2. The Frank-Starling law in the heart refers to when more than the normal volume of blood is returned to the heart by the venous system. First it is written that, on behalf of the centurion, the elders appealed to Jesus earnestly Lk 7:4. Usually, a viscometer measures the torque required to rotate a spindle in a fluid. The point at which laminar flow evolves into turbulent flow depends on other factors besides the velocity at which the layers move.
They also help to assess the damage caused by heat, oxygen etc. As the viscosity increased, the blood flow decreased 2. Turbulent flow is the most common type of flow, and it is very chaotic relative to the laminar flow. The net movement of water would be into the cell in a You correctly answered: b. While viscosity is the thickness or thinness of a fluid, density refers to the space between its particles. You have not answered this question. Daphny Maldonado Bio Lab 2107 Kiah Britton W 10-12:30 Is H20 Bad for You? But how do you interpret the curve? Starting at a low speed, note the reading at each successively higher speed until the reading goes off the scale.