Biology · Endocrine System
How do epinephrine and norepinephrine primarily affect cardiac function and systemic blood pressure during a stress response?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1They slow down cardiac relaxation phase without altering the contractility or blood pressure.
- 2They increase heart rate but decrease myocardial contractility, keeping blood pressure stable.
- 3They decrease heart rate, cause vasodilation, and lower blood pressure.
- 4They increase heart rate, increase myocardial contractility, and elevate blood pressure.✓
Correct answer
They increase heart rate, increase myocardial contractility, and elevate blood pressure.
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