Physics of blood flow MCQ 16+

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• Resistance to blood flow is directly proportional to
  ক

  Viscosity of blood

  খ

  Length of blood vessels

  গ

  Velocity of blood flow

  ঘ

  Elasticity of vessel wall

  ঙ

  Fourth power of the radius of blood vessel
• TPR is directly proportional to:
  ক

  Viscosity of blood

  খ

  Length of blood vessels

  গ

  Velocity of blood flow

  ঘ

  Fourth power of radius

  ঙ

  Elasticity of vessel wall
• Total peripheral resistance is directly proportional to
  ক

  Length of blood vessels

  খ

  Viscosity of blood

  গ

  Velocity of blood flow

  ঘ

  Diameter of blood vessels

  ঙ

  Elasticity of vessel wall
• Resistance To Blood Flow Is
  ক

  Directly Proportional To Velocity Of Blood Flow

  খ

  Inversely Proportional To Radius Of Blood Vessel

  গ

  Inversely Proportional To Cross Sectional Area Of Blood Vessel

  ঘ

  Directly Proportional To Length Of Blood Vessel

  ঙ

  Directly Proportional To Haematocrit
• The velocity of the blood flow is
  ক

  Zero cm of water per second in ascending aorta during early diastole

  খ

  Inversely proportional to cross sectional area of blood vessels

  গ

  Higher in the vein than in the venules

  ঘ

  Higher in the capillaries than the arterioles

  ঙ

  Higher in the venules than in the arterioles
• Blood flow is directly proportional to
  ক

  Cross sectional area of blood vessel

  খ

  Pressure gradient

  গ

  Diameter of blood vessel

  ঘ

  Viscosity of blood

  ঙ

  Length of blood vessel
• Within an organ resistance to blood flow decreases when
  ক

  Metabolic activity of the organ increases

  খ

  PCO2 in the organ increases

  গ

  PO2 in the organ increases

  ঘ

  Mean arterial BP increases

  ঙ

  Sympathetic nerves to the organ are stimulated
• Velocity of blood flow is
  ক

  Higher in the arteries than in the arterioles

  খ

  Close to zero in ascending aorta during early diastole

  গ

  Inversely proportional to the cross sectional area of blood vessels

  ঘ

  Higher in the venules than in the arterioles

  ঙ

  Higher in the veins than in the arteries
• Total peripheral resistance is inversely proportional to
  ক

  Cross sectional area of blood vessels

  খ

  Radius of blood vessels

  গ

  Velocity of blood flow

  ঘ

  Viscosity of blood

  ঙ

  Length of blood vessels
• Viscosity of blood is
  ক

  A function of friction between molecules of flowing blood

  খ

  A contributing factor to peripheral resistance

  গ

  A determining factor of blood flow

  ঘ

  Increased in anemia

  ঙ

  Increased in hypoproteinemia
• Tendency to turbulence flow is directly proportional to
  ক

  Diameter of the blood vessel

  খ

  Density of blood

  গ

  Velocity of blood flow

  ঘ

  Viscosity of blood

  ঙ

  Elasticity of vessel wall
• The velocity of blood flow is
  ক

  Close to zero in ascending aorta daring early diastole

  খ

  Higher in arteries than in arterioles

  গ

  Inversely proportional to cross sectional area of blood vessels

  ঘ

  Higher in capillaries than in arterioles

  ঙ

  Higher in venules than in the arterioles