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Branches of the subclavian arteries carry blood on the way to the brain,neck and shoulder muscles,and mammary glands.

A) True
B) False

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Systolic blood pressure is recorded


A) in arteries and is the minimum pressure that is recorded during ventricular relaxation.
B) in arteries and is the maximal pressure that is recorded during ventricular contraction.
C) in veins and is the maximal pressure recorded during atrial contraction.
D) in veins and is the minimum pressure recorded during atrial relaxation.
E) in both arteries and veins and is the maximum pressure recorded during diastole of the heart.

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

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Most of the venous blood of the cranium drains through large vessels known as the _____________ venous sinuses.

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If someone were to decrease their food intake and increase aerobic exercise,they might lose adipose tissue and condition their muscles.These changes would also influence their blood vessels,as there would be


A) regression of blood vessels in adipose tissue and angiogenesis in skeletal muscle.
B) angiogenesis in both adipose tissue and skeletal muscle.
C) regression of blood vessels in both adipose tissue and skeletal muscle.
D) angiogenesis in adipose tissue and regression of blood vessels in skeletal muscle.
E) changes in the diameter of blood vessels,but no angiogenesis nor regression.

F) C) and E)
G) C) and D)

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What causes much of the blood in the fetal right atrium to be shunted to the left atrium through the foramen ovale


A) The blood pressure in the right atrium is greater than in the left atrium.
B) There is a valve that directs the blood that way.
C) The fetus is in an antigravity situation provided by the amnionic fluid.
D) The blood pressure in the left atrium is greater than in the right atrium.
E) The umbilical arteries have valves.

F) None of the above
G) B) and D)

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When blood flow increases stretch of specific arterioles in the kidney,the arterioles reflexively contract to keep blood pressure from getting too high.This is an example of the myogenic response.

A) True
B) False

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What branches arise directly from the celiac trunk


A) Left gastric and splenic arteries
B) Left gastroepiploic and splenic arteries
C) Left gastric and common hepatic arteries
D) Left gastric,left gastroepiploic,and splenic arteries
E) Left gastric,splenic,and common hepatic arteries

F) A) and E)
G) A) and B)

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Which are found in the capillary wall A: Endothelium B: Subendothelial layer C: Internal elastic lamina D: Intercellular clefts E: External elastic lamina F: Basement membrane


A) a,d,f
B) a,b,d,f
C) a,b,d,e,f
D) a,c,d,e,f
E) b,d,e,f

F) C) and D)
G) A) and B)

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Which part of the circulatory system holds the largest amount of blood


A) Pulmonary arteries
B) Pulmonary veins
C) Systemic arteries
D) Systemic veins

E) A) and B)
F) A) and C)

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What causes closure of the foramen ovale at birth


A) Higher pressure in the left atrium,which causes interatrial septum flaps to close
B) Rapid myocardial tissue growth stimulated by pregnancy hormones
C) A rise in fetal oxygen levels,which triggers growth of the epithelial lining
D) An increase in endothelial mucous production,which forms a plug
E) Migration of connective tissue from the right atrioventricular valve

F) B) and C)
G) D) and E)

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Which of the artery types contain the internal and external elastic laminae


A) Elastic arteries
B) Arterioles
C) Muscular arteries
D) Elastic and muscular arteries
E) Elastic arteries and arterioles

F) D) and E)
G) B) and C)

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Sinusoids are found in A: bone marrow B: spleen C: small intestine D: kidney E: liver F: muscle G: skin


A) a,b,e
B) b,c,e,f
C) c,d
D) f,g
E) b,c,d,g

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

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When physical exertion has ended and the body is at rest,veins demonstrate


A) vasodilation so that they function as blood reservoirs.
B) vasodilation so that blood is shifted toward the rest of the circulatory system.
C) vasoconstriction so that they function as blood reservoirs.
D) vasoconstriction so that blood is shifted toward the rest of the circulatory system.

E) C) and D)
F) B) and D)

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The stomach needs the celiac artery blood supply in order to receive blood.

A) True
B) False

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As an arterial pathway moves farther from the heart,the arteries


A) get smaller.
B) get larger.
C) show no change in their lumen size.

D) All of the above
E) A) and C)

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Atrial natriuretic peptide stimulates


A) vasoconstriction,increased urine output,and therefore increased blood pressure.
B) vasodilation,increased urine output,and therefore decreased blood pressure.
C) vasoconstriction,decreased urine output,and therefore decreased blood pressure.
D) vasodilation,decreased urine output,and therefore increased blood pressure.
E) vasoconstriction,sodium retention,and therefore increased blood pressure.

F) D) and E)
G) B) and E)

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Describe the changes in blood flow and pressure that result when someone engages in prolonged strenuous exercise.Indicate how pressure,flow,and resistance change systemically and in the skeletal muscles being used.

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CO rises dramatically,increasi...

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Excitation of the vasomotor center results in


A) increased sympathetic activity and predominantly more vasoconstriction than vasodilation.
B) increased parasympathetic activity and predominantly more vasodilation than vasoconstriction.
C) increased autonomic activity that increases heart rate and dilates blood vessels.
D) decreased autonomic activity that decreases heart rate and constricts blood vessels.
E) redistribution of blood flow away from the skeletal muscles and toward the skin.

F) A) and C)
G) None of the above

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The umbilical cord contains _____ umbilical vein(s) and _____ umbilical artery(ies) .


A) one;one
B) two;two
C) one;two
D) two;one
E) two;three

F) D) and E)
G) B) and E)

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The hepatic portal system allows for the processing of


A) drugs and toxins in the blood so that they are secreted directly into the urine.
B) bacteria that grow in the large intestine but need to be regulated.
C) nutrients and toxins absorbed from the gastrointestinal system into the blood.
D) hormones that are secreted by glands and must be directed to their target organs.

E) A) and B)
F) A) and C)

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