Multiple Choice Questions

Which of the following vasoactive substances causes vasodilation at low to normal concentration, but at high concentrations causes vasoconstriction on vascular smooth muscle?
  • Arterioles
  • Sympathetic nerves to lymphatic vessels
  • Hemoglobin
  • Potassium ions
The total cross-sectional area is greatest in which blood vessels?
  • capillaries
  • Hemoglobin
  • veins; arteries
  • Arterioles
Which of the following blood vessel types provides the greatest resistance to blood flow?
  • Sympathetic nerves to lymphatic vessels
  • Hemoglobin
  • Arterioles
  • Potassium ions
Which of the following statements best defines the term compliance?
  • Blood velocity through capillaries is very fast.
  • A measure of the relationship between pressure and volume changes
  • Sympathetic nerves to lymphatic vessels
  • Arterioles
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Multiple Choice Questions
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