Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← Human Body & HealthWhat distinguishes autoregulation in cerebral blood vessels from autoregulation in systemic vessels under changing blood pressure?
A)Greater reliance on myogenic response
B)Reduced sensitivity to carbon dioxide
C)Exaggerated response to sympathetic stimulation
D)Increased sensitivity to metabolic factors✓
💡 Explanation
Cerebral vessels are highly sensitive to local metabolic demands to maintain constant cerebral blood flow. Because the brain needs continuous oxygen and glucose supply, autoregulation is strongly influenced by metabolic factors such as pH and adenosine. Therefore, cerebral vessels react more intensely to these signals rather than to systemic signals alone.
🏆 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 →- Why does prolonged use of certain antidepressants targeting serotonin reuptake eventually lead to a diminished effect on mood elevation?
- If a patient abruptly stops taking a benzodiazepine after prolonged use, which consequence results from the brain's attempt to restore homeostasis?
- Why does the oxygen saturation in arterial blood sometimes fail to fully equilibrate with alveolar oxygen partial pressure during intense exercise, even when ventilation rate is high?
- Why does bone remodeling slow down significantly after prolonged immobilization in a plaster cast following a fracture?
- If a patient's bone marrow is damaged by chemotherapy, resulting in reduced production of all blood cells, which consequence follows regarding erythropoietin levels and reticulocyte count?
- If a researcher isolates skeletal muscle fibers and introduces a non-hydrolyzable ATP analog during a contraction experiment, which consequence follows?
