Which outcome occurs when a hibernating marmot's core temperature rapidly increases above a critical threshold?

💡 Explanation

When a marmot's temperature rises quickly, systemic vasodilation arises because temperature-sensitive neurons signal widespread vessel relaxation, dropping blood pressure. Therefore, systemic vasodilation occurs instead of glycogen changes, brown fat stimulation, or enhanced torpor, which involve different hormonal and neuronal controls.

• Which outcome is directly promoted by vasodilation in a mammal initiating exercise and increasing metabolic rate?
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• Which increased metabolic demand occurs when fish maintain osmoregulation?
• Which consequence results when buoyancy exceeds equilibrium during a fish swim?
• Which outcome occurs when the rete mirabile experiences unrestricted vasodilation in arctic mammals?
• A desert cactus experiences high daytime temperatures; which mechanism minimizes water during its CO₂ intake?