Question

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what is vasodilation?
the process of breaking down blood vessels and reducing blood flow to an area.
the process of widening blood vessels, increasing blood flow to an area.
the process of constricting blood vessels, decreasing blood flow to an area.
the process of blocking blood vessels and stopping blood flow to an area.
the process of narrowing blood vessels, decreasing blood flow to an area.

Explanation:

Vasodilation is a physiological process. The term "vaso -" relates to blood vessels. "Dilation" means to widen. So, it should involve the widening of blood vessels. When blood vessels widen, more blood can flow through them to a particular area.

• The first option about breaking down blood vessels is incorrect as vasodilation is about widening, not breaking.
• The third option (constricting) and fifth option (narrowing) are opposite of dilation.
• The fourth option (blocking) is also not related to the concept of dilation.

Answer:

The process of widening blood vessels, increasing blood flow to an area.