Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← Human Body & HealthWhy does local blood flow autoregulation fail during severe sepsis?
A)Increased oxygen extraction compensates
B)Baroreceptor reflexes maintain perfusion
C)Erythropoietin production increases acutely
D)Nitric oxide causes vasodilation excessively✓
💡 Explanation
Sepsis causes excessive nitric oxide production, triggering vasodilation that overwhelms autoregulatory mechanisms because the vascular smooth muscle becomes unresponsive to normal constricting signals. Therefore, blood flow is not appropriately adjusted to metabolic needs, rather than being maintained by other compensatory mechanisms.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Human Body & Health →- A football player sustains a helmet-to-helmet collision; if the resulting rapid head acceleration induces diffuse axonal injury via shear strain, which recovery protocol will be most effective?
- A researcher investigates osteoarthritis progression by analyzing synovial fluid samples. If IL-1β cytokine levels are chronically elevated, which effect dominates cartilage degradation?
- If a dorsal horn interneuron releases enkephalin in response to descending modulation after an acute injury, which consequence follows?
- Which mechanical limitation results when systemic vascular resistance severely drops suddenly?
- If a 55-year-old person with early presbyopia strains to read fine print, which consequence is most likely?
- During an inflammatory response, which mechanism is crucial for the resolution phase in lung tissue following viral infection, preventing chronic inflammation?
