The main cause of increased blood How to exercising muscles is:: (A) Raised blood pressure, (B) Vasodilatation due to local metabolites, (C) Increased sympathetic discharge to peripheral vessels, (D) Increased heart rate
Answer is B. Ans. (b) Vasodilatation due to local metabolites(Ref: Guyton, 13th ed/p.1093)In exercising muscle, there is accumulation of local metabolites leading to vasodilation - This increases blood flow.