71.  Which of the following are components of the hepatic portal system?  
A.  azygos vein
B.  inferior vena cava
C.  gastric vein
D.  inferior mesenteric vein
E.  both the gastric vein and the inferior mesenteric vein

72.  The hepatic portal system  
A.  begins and ends with capillary beds.
B.  transports nutrients from the digestive tract to the liver.
C.  allows the liver to detoxify substances entering the body through the digestive tract.
D.  has no pumping mechanism between the capillary beds.
E.  All of these choice are correct.

73.  The _____ begins with capillaries in the abdominal viscera and ends with capillaries in the liver.  
A.  superior mesenteric system
B.  celiac system
C.  hepatic portal system
D.  hepatic vein
E.  splenic system

74.  Which of the following sequences is correct?  
A.  external iliac vein, internal iliac vein, common iliac vein
B.  liver sinusoid, central vein, hepatic vein
C.  superior vena cava, azygos vein, posterior intercostal vein
D.  fibular vein, femoral vein, popliteal vein
E.  hepatic vein, hepatic portal system, inferior vena cava

75.  As the popliteal vein ascends the leg, it becomes the  
A.  peroneal vein.
B.  saphenous vein.
C.  common iliac vein.
D.  femoral vein.
E.  deep femoral vein.

76.  The velocity of blood flow inside a blood vessel  
A.  is equal to the blood pressure.
B.  is faster in the center of the blood vessel.
C.  is most rapid at a bend or turn in the vessel.
D.  increases along the walls of the blood vessel.
E.  is more rapid along the sides of the vessel.

77.  Which of the following statements about laminar blood flow is true?  
A.  The innermost layer of blood moves at the lowest velocity.
B.  Laminar blood flow occurs when blood flows past an area of constriction.
C.  The outermost layer of blood experiences the greatest resistance to flow.
D.  In laminar blood flow, the rapid rate of blood flow exceeds critical velocity.
E.  It makes lots of different noises.

78.  Blood pressure is the  
A.  product of the stroke volume times heart rate.
B.  number of layers of blood in laminar flow models.
C.  measure of force blood exerts against blood vessel walls.
D.  viscosity of the blood and resistance to blood flow.
E.  measure of the volume of the blood.

79.  The auscultatory method of measuring blood pressure  
A.  relies on the insertion of a cannula into the vessel in which pressure is being measured.
B.  monitors the oscillations in the blood vessel during changes in pressure.
C.  involves an electronic transducer attached to a mercury manometer.
D.  relies on hearing Korotkoff sounds through a stethoscope.
E.  relies on hearing the sounds made by laminar flow of the blood.

80.  A blood pressure reading of 120/80 would  
A.  indicate a diastolic pressure of 120 mm Hg.
B.  have Korotkoff sounds at pressures above 120 mm Hg.
C.  indicate a systolic pressure of 120 mm Hg.
D.  indicate a systolic pressure of 80 mm Hg.
E.  would be considered hypertensive.