Blood pressure increases and heart rate decreases in response to
A
Exercise
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B
Haemorrhage
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C
Exposure to high altitude
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D
Increased intracranial pressure
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Solution
The correct option is C Increased intracranial pressure The nervous system responds to increased intracranial pressure (ICP) by Cushing reflex that results in Cushing's triad of increased blood pressure, irregular breathing, and a reduction of the heart rate. It is common during the terminal stages of acute head injury.