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

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.

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.

Fill in the Blank QuestionFill in the blank question.The smallest-diameter blood vessels are the .

Clinical Corner: In speaking with his cardiologist, a high risk individual with angina pectoris during exercise was informed that his coronary blood flow is reduced. The most important variable that determines resistance to blood flow in his blood vessels is most likely: increased viscosity of blood from not exercising. the length of the blood vessel as he is a short individual. the diameter of the vessel due to coronary artery disease. increase blood pressure due to hypertension.

The resistance of the blood vessels to blood flow through them is inversely related to what factor? The vessel length The volume of blood The viscosity of blood The pressure gradient across the vessel The vessel radius