This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
The physiological effect in unacclimatised person suddenly exposed to cold is 
Select and explain. 
A. Tachycardia, B. Shift of blood from shell to core, C. Non shivering thermogenesis, D. Hypertension
B: Shift of blood from shell to core
Answer: B: Shift of blood from shell to core 
Explanation: To preserve the core body heat in cold conditions, the flow of blood is decreased in the periphery (skin) by vasoconstriction. This prevents loss of heat.