An elevation in tissue temperature results in vasodilation of superficial blood vessels and an increase in what to the area?

An elevation in tissue temperature results in vasodilation of superficial blood vessels and an increase in what to the area?

• A. Vasodilation
• B. Blood flow
• C. Oxygen consumption
• D. Edema

Answer: (B)

Raising tissue temperature triggers local vasodilation of superficial vessels to shed heat, so more blood flows to the area. This increased perfusion brings heat to the skin for dissipation and delivers more oxygen and nutrients while aiding removal of wastes. Therefore, the area receives more blood flow. Edema isn’t an automatic result of warming, and while oxygen use can change with metabolism, the immediate and defining effect of heat here is the rise in perfusion.

Raising tissue temperature triggers local vasodilation of superficial vessels to shed heat, so more blood flows to the area. This increased perfusion brings heat to the skin for dissipation and delivers more oxygen and nutrients while aiding removal of wastes. Therefore, the area receives more blood flow. Edema isn’t an automatic result of warming, and while oxygen use can change with metabolism, the immediate and defining effect of heat here is the rise in perfusion.