OCR GCSE Biology 2026 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 1090

What does vasodilation refer to?

Contraction of the blood vessels

Expansion of blood vessels near the skin surface

Vasodilation refers to the expansion of blood vessels, particularly those located near the skin surface. This process occurs when smooth muscles in the vessel walls relax, allowing the blood vessels to widen. When vasodilation happens, it leads to an increase in blood flow to the area, which is often a response to increased temperature or the demands of active tissues. This mechanism helps with thermoregulation, as more blood flow to the skin allows the body to release heat more effectively. Thus, the choice indicating the expansion of blood vessels near the skin surface correctly captures the essence of what vasodilation entails.

Get further explanation with Examzify DeepDiveBeta

Increased blood flow to the internal organs

Reduction of blood flow to the heart

Next Question

Report this question

Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy