9. -/1 points SerCP11 9.P.056 My Notes Ask Your Teacher The pulmonary artery, wh
ID: 1780703 • Letter: 9
Question
9. -/1 points SerCP11 9.P.056 My Notes Ask Your Teacher The pulmonary artery, which connects the heart to the lungs, has an inner radius of 2.3 mm and is 8.3 cm long. If the pressure drop between the heart and lungs is 390 Pa, what is the average speed of blood in the pulmonary artery? m/s Need Help? Read 10. 0-1 points SerCP 119P059 My Notes Ask Your Teac O What radius needle should be used to inject a volume of 475 cm3 of a solution into a patient in 31 min? Assume the length of the needle is 2.5 cm and that the solution is elevated 1.0 m above the point of injection. Further, assume the viscosity and density of the solution are those of pure water, and that the pressure inside the vein is atmospheric. (The density of water is 1.00 x 103 kg/m3.) Need Help?Explanation / Answer
9] By Poiseuille equation,
P = 8µLv/R^2
v = PR^2/[8µL]
The viscosity of blood at body temperature of 37 °C is about µ = 3.50×10^-3 Pas
now average speed of blood v= 390*2.3e-3^2 /[8*3.5e-3*0.083]
= 0.888 m/s answer
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.