Question 1

According to the Laplace's Law,as the diameter of a blood vessel increases,the force applied to the wall of that vessel

Accepted Answer

A)  increases.
B)  decreases.
C)  increases,then decreases.
D)  remains the same.
E)  None of these choices is correct.F) A) and E)
G) C) and D)

Question 2

Match the following with the appropriate description.
-subclavian artery

Accepted Answer

A)  formed when the right and left vertebral arteries unite
B)  supplies blood to the face,nose,and mouth
C)  terminates by forming the middle cerebral arteries
D)  supplies blood to the arm and shoulder regions
E)  sense organs that monitor blood pressureF) All of the above
G) B) and C)

Question 3

The velocity of blood flow inside a blood vessel

Accepted Answer

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.F) All of the above
G) A) and B)

Question 4

Which of the following statements about laminar blood flow is true?

Accepted Answer

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.F) A) and E)
G) A) and D)

Question 5

Which of the following would lead to relaxation of the precapillary sphincter?

Accepted Answer

A)  decreased tissue metabolism
B)  decreased oxygen levels in tissue cells served by the capillary
C)  decreased carbon dioxide concentration in the capillary bed
D)  decreased lactic acid production by cells in the capillary bed
E)  decreased nitric acid levelsF) D) and E)
G) A) and E)

Question 6

The vasomotor center ______.

Accepted Answer

A)   regulates the expansion of elastic arteries
B)   controls the contraction and relaxation of precapillary sphincter muscles
C)   increases the strength of heart muscle contraction under low oxygen conditions
D)   sends low frequency action potentials to blood vessels to maintain toneE) A) and D)
F) A) and C)

Question 7

Hormones from the adrenal medulla

Accepted Answer

A)  are released in response to parasympathetic stimulation.
B)  cause vasodilation in blood vessels of the skin.
C)  decrease the heart rate.
D)  cause an increase in stroke volume.
E)  are released in response to vagal stimulation.F) A) and D)
G) All of the above

Question 8

When blood pressure increases,a number of events occur that return blood pressure to normal.Which of the following is one of the events that occurs after an increase in blood pressure?

Accepted Answer

A)  Baroreceptors are stimulated.
B)  Action potential frequency to the cardioregulatory center of brain decreases.
C)  Sympathetic stimulation of the heart increases.
D)  Heart rate increases.
E)  An increase in number of action potentials in the cardiac nerve.F) B) and E)
G) A) and E)

Question 9

Match the term with the appropriate description.
-embolism

Accepted Answer

A)  dead tissue
B)  a floating clot
C)  sudden decreased blood supply to a part of the brain
D)  a stationary clot
E)  a localized area of dead cells resulting from ischemia,F) C) and D)
G) A) and B)

Question 10

Match the term with the best description.
-venules

Accepted Answer

A)  simple squamous epithelium of capillaries
B)  drain capillary networks
C)  regulate blood flow into capillaries
D)  do not have fenestrae
E)  bypass capillary bedsF) C) and D)
G) B) and C)

Question 11

In capillary exchange,which of the following statements is true?

Accepted Answer

A)  Most fluid that leaves the arterial end of a capillary reenters the venous end of a capillary.
B)  Interstitial fluid normally has a higher osmotic pressure than plasma.
C)  Constriction of the precapillary sphincter will increase blood pressure in the capillary.
D)  Interstitial protein concentration is normally higher than plasma protein concentration.
E)  Most fluid that leaves the arterial end of a capillary enters the lymphatic system.F) A) and E)
G) B) and E)

Question 12

What artery supplies the small intestine,cecum,ascending colon,and transverse colon?

Accepted Answer

A)  inferior phrenic artery
B)  lumbar artery
C)  superior mesenteric artery
D)  inferior mesenteric arteryE) C) and D)
F) A) and B)

Question 13

Which of the following is NOT a major point where the pulse can be monitored?

Accepted Answer

A)  common carotid artery
B)  facial artery
C)  popliteal artery
D)  ulnar arteryE) A) and B)
F) A) and C)

Question 14

What creates the pulse?

Accepted Answer

A)  the diastole of the ventricles
B)  ejection of blood from the left ventricle into the aorta
C)  the compliance of the arteries
D)  constriction of the arteriolesE) A) and B)
F) C) and D)

Question 15

All of these will easily diffuse across the plasma membrane EXCEPT:

Accepted Answer

A)   oxygen
B)   carbon dioxide
C)   steroid hormone
D)   glucoseE) None of the above
F) All of the above

Question 16

Match the term with the appropriate description.
-varicose veins

Accepted Answer

A)  a bulge (a weak spot) in the artery wall
B)  degenerative changes in arteries
C)  an overstretching of the veins of the lower extremities
D)  inflammation of the veins
E)  small vessels that supply nutrients to large arteries,F) B) and D)
G) B) and E)

Question 17

Venous drainage from the posterior thoracic wall enters the superior vena cava via the ______ vein.

Accepted Answer

A)   subclavian
B)   internal thoracic
C)   accessory hemiazygos
D)   hemiazygos
E)   azygosF) B) and E)
G) None of the above

Question 18

In which of the following would you detect a weak pulse?

Accepted Answer

A)  hypertension
B)  hemorrhagic shock
C)  fluid excess
D)  increased stroke volume
E)  a healthy young personF) All of the above
G) B) and E)

Question 19

The vasa vasorum

Accepted Answer

A)  are incompetent valves in the large veins.
B)  are special capillaries that supply nutrients to the walls of arteries and veins.
C)  are the blood vessels that supply blood to the vas deferens.
D)  are blood vessels that directly connect arteries to veins.
E)  supply blood to skeletal muscle.F) C) and D)
G) B) and E)

Question 20

The superficial vessels typically seen in the hand and forearm are tributaries of the _____ and _____ veins.

Accepted Answer

A)   subclavian; axillary
B)   axillary; brachial
C)   brachial; cephalic
D)   basilica; brachial
E)   cephalic; basilicF) A) and B)
G) A) and C)

Exam 21: Cardiovascular System: Blood Vessels and Circulation

Match the term with the best description. -venules

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Which of the following statements about laminar blood flow is true?

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What creates the pulse?

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The vasomotor center ______.

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According to the Laplace's Law,as the diameter of a blood vessel increases,the force applied to the wall of that vessel

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Which of the following would lead to relaxation of the precapillary sphincter?

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The vasa vasorum

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In capillary exchange,which of the following statements is true?

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In which of the following would you detect a weak pulse?

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What artery supplies the small intestine,cecum,ascending colon,and transverse colon?

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Match the following with the appropriate description. -subclavian artery

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Which of the following is NOT a major point where the pulse can be monitored?

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Match the term with the appropriate description. -varicose veins

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When blood pressure increases,a number of events occur that return blood pressure to normal.Which of the following is one of the events that occurs after an increase in blood pressure?

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Hormones from the adrenal medulla

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The superficial vessels typically seen in the hand and forearm are tributaries of the _____ and _____ veins.

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Venous drainage from the posterior thoracic wall enters the superior vena cava via the ______ vein.

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Match the term with the appropriate description. -embolism

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The velocity of blood flow inside a blood vessel

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All of these will easily diffuse across the plasma membrane EXCEPT:

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The superficial vessels typically seen in the hand and forearm are tributaries of the _ and _ veins.

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