Below are typical values for blood flow through a coronary artery. Note that viscosity of the blood is not neglected. Density of blood, ρ = 1060 kg/m3 Viscosity of blood, ν = 0.004 Pa x s Flow rate, Q = 0.8 mL/s Length of artery, L = 3.5 cm Radius of artery, r = 0.2 cm
For the same pressure drop, calculate the flow rate if the radius of the artery reduces by 30% its original value due to blockage?
Below are typical values for blood flow through a coronary artery. Note that viscosity of the...
The Reynolds Number is 4525 in a 10 mm diameter human artery. The density and viscosity of blood are approximately 1060 kg/m3 and 0.004 Kg/(m.s), respectively. a. Is the flow in the artery laminar or turbulent? b. Calculate the average velocity and the maximum velocity across the artery’s cross section.
The average diameter of a healthy coronary artery is 2.5 mm, with a blood fow rate of 6.4 cmi/s. The density of blood is 1.056 g/cm3. Suppose an overweight diabetic patient has plaque bui up in his coronary artery, decreasing the vessel diameter by 67% and the blood flow velocity by 25%. A graft is surgically impar ted to bypass the constncted ego the coronary artery is the same on both sides of the blockage and the curvature in the...
The buildup of plaque on the walls of an artery may decrease its diameter from 1.1 cm to 0.71 cm. The speed of blood flow was 14 cm/s before reaching the region of plaque buildup. (a) Find the speed of blood flow within the plaque region. cm/s (b) Find the pressure drop within the plaque region. (Assume the density of blood is 1060 kg/m3.) Pa
What is the greatest average speed of blood flow at 37 °C in an artery of radius 1.50 mm if the flow is to remain laminar? Take the density of blood to be 1025 kg/m", and the viscosity to be 2.084 x 10-3 Pa-s. greatest average speed: m/s What is the corresponding flow rate? flow rate: m/s Question Credit: OpenStax College Physics
Arteriosclerotic plaques forming on the inner walls of arteries can decrease the effective cross-sectional area of an artery. Even small changes in the effective area of an artery can lead to very large changes in the blood pressure in the artery and possibly to the collapse of the blood vessel.Imagine a healthy artery, with blood flow velocity ofv0=0.14m/s and mass per unit volume ofρ=1050kg/m3. The kinetic energy per unit volume of blood is given byK0=12ρv20.Imagine that plaque has narrowed an...
When the flow of oxygenated blood through a coronary artery is blocked by atherosclerosis and there is ischemia of the myocardium, the patient will experience ________. A. shortness of breath B. an elevated blood pressure C. a slow heart rate D. chest pain
Using Poisuille’s Law, calculate the flow rate in an artery of diameter 0.8 cm, length of 4 cm, with the coefficient of blood viscosity is 4*10-3 Pa-s at normal blood pressure of 120 mm-Hg. (6 points) How does this flow rate change upon a 20% occlusion of the artery? (4 points) What is usually the compensation process to hold the flow rate steady? (2 points)
The viscosity of blood is 2.10 × 10−3 Pa⋅s. * What is the pressure difference required to make blood flow through an artery of inner radius 2.00 mm and length 0.200 m at an average speed of 5.28 cm/s? ___ Pa * Blood flows through an artery of inner radius 2.00 mm and length 0.200 m at an average speed of 5.28 cm/s. What is the ratio of the pressure difference required to make blood flow through this artery to...
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4 A nonviscous blood (density 1060 kg/m3) passes through a horizontal artery. If the speed of blood changes from 4m/s to 8 m/s, as it enters a narrow region, the change in pressure Ap is A) 2120 Pa B) 4240 Pa C) 25440 Pa D) 50880 Pa
LEARN MORE REMARKS Compare this to the volume flow rate in the absence of any viscosity. Using Bernoulli's equation, the calculated volume flow rate is approximately five times as great. As expected, viscosity greatly reduces flow rate. QUESTION If the radius of a tube is doubled, by what factor will the flow rate change for a viscous liquid? PRACTICE IT Use the worked example above to help you solve this problem. A patient receives a blood transfusion through a needle...