Biology · Human Physiology
A student experiences a sudden increase in heartbeat and blood pressure during an exam due to stress. His nervous system activates pathways that increase the strength of ventricular contraction and cardiac output. Which regulatory mechanism is primarily involved?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Hormonal regulation by thyroid gland
- 2Intrinsic regulation by nodal tissue
- 3Sympathetic nervous system✓
- 4Parasympathetic nervous system
Correct answer
Sympathetic nervous system
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