Which of the Following Statements Are True of CO₂ and Cerebral

question 10

Multiple Choice

Which of the following statements are true of CO₂ and cerebral blood flow?
I.Increased PCO₂ dilates cerebral vessels, raising cerebral blood flow.
II.Normal ICP is less than 10 mm Hg.
III.To sustain the cerebral blood flow, a cerebral perfusion pressure (CPP) of approximately 60 mm Hg must be maintained.
IV.Increased PCO₂ constricts cerebral vessels, decreasing cerebral blood flow.

• A) II, III, IV
• B) I, II, III, IV
• C) II, IV
• D) I, II, III

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