Poiseuille’s Law describes the pressure drop in an artery of length L and radius r due to the viscosity of blood, where η is the coefficient of viscosity for the fluid and Q is the volume flow rate. According to Poiseuille’s Law, pressure drop would be MOST affected by:A.increasing the coefficient of viscosity by a factor of two.B.increasing the volume flow rate by a factor of two.C.increasing length of the artery by a factor of two.D.reducing the radius of the artery by a factor of two.

4. The speed of blood flow in an artery is given by Poiseuille’s law. The law says that blood flow is fastest in thecenter of the artery and slower at the edges. We can express this asS(r) =C(R2−r2).In this equationRis the fixed radius of the artery andSis the blood flow speed at a distancerfrom the centerof the artery. In a typical human aortaR= 1.4 centimeters and the peak blood flow velocity is 90 centimetersper second.(a) Calculate the constantC.1

Poiseuille's Law describes flow rate through a cylinder. Which of the following statments is correct?Question 5Select one:a.Poiseuille's Law applies to laminar flow.b.Poiseuille's Law only applies in the absence of friction.c.Poiseuille's Law applies to a tube with varying radius.d.The flow rate is proportional to the length of the tube.e.The liquid flows due to its weight, and the effect of the flow is to cause a pressure difference between the ends of the tube.

The diameter of an individual’s blood vessel is decreased due to a build up of fatty deposits. Which of the following factors would NOT effect blood flow through the vessel: the flow pattern of the blood the pressure gradient between both sides of the deposit The partial pressure of oxygen in the blood the viscosity of the blood

Stomach contents empty with an initial flow rate of 0.67 cm3/sec. Patients who undergo gastric bypass surgery will increase this rate by a factor of 16. Assuming that the flow of stomach contents approximates Poiseuille’s Law, what change to their gastrointestinal connection would explain this, provided no other changes occur that affect stomach content flow? A.The new connection is two times longer.B.The new connection is four times longer.C.The new connection radius is two times larger.D.The new connection radius is four times larger.

Fill in the Blank QuestionFill in the blank question.Increasing the diameter of an artery () or decreasing the diameter of an artery () can alter blood flow and blood pressure.