The artery that will eventually subdivide to form the posterior cerebral arteries is the _____ artery.
A. basilar
B. external carotid
C. maxillary
D. superficial temporal
E. internal carotid
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Question 2) Aldosterone and atrial natriuretic peptide have ________ effects on blood pressure.
A. similar
B. opposite
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Question 3) Increases in angiotensin II levels cause decreases in blood pressure.
Indicate whether this statement is true or false.
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Question 4) 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.
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Question 5) Angiotensin II causes
A. increased heart rate, vasodilation, and less urine formation.
B. decreased heart rate, vasoconstriction, and increased urine formation.
C. vasoconstriction, decrease urine formation, and increased thirst.
D. decreased thirst, vasodilation, and increased urine formation.
E. vasoconstriction, increased urine formation, and decreased thirst.
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Question 6) Epinephrine, aldosterone, and antidiuretic hormone each cause an increase in blood pressure.
Indicate whether this statement is true or false.
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Question 7) Blood velocity is measured in _________ and is generally _________ related to total cross-sectional area of blood vessels.
A.
cm/second; directly
B.
cm/second; inversely
C.
liter/min; directly
D.
liter/min; inversely
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Question 8) The velocity of blood flow through capillaries is
A. rapid, due to their small total cross sectional area.
B. rapid, which prevents pooling in lower extremeties.
C. slow, due to small total cross-sectional area, low friction and high pressure.
D. slow, which allows sufficient time for exchange of gases and nutrients between blood and tissues.
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Question 9) . 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.
What will be an ideal response?
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Question 10) Pulmonary veins carry blood toward the left atrium of the heart.
Indicate whether this statement is true or false.
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