Vasodilator
from class: General Biology I Definition A vasodilator is a substance that causes blood vessels to widen by relaxing the smooth muscle cells within the vessel walls. This process increases blood flow and decreases blood pressure.
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Predict what's on your test 5 Must Know Facts For Your Next Test Vasodilators play a crucial role in regulating blood pressure and ensuring adequate blood flow to various organs. They are often involved in the body's response to changes in osmotic pressure and fluid balance. Common vasodilators include nitric oxide, prostaglandins, and certain hormones like atrial natriuretic peptide (ANP). Vasodilation can help remove waste products from tissues more efficiently by increasing blood flow. In osmoregulation, vasodilators can influence kidney function by altering glomerular filtration rate (GFR). Review Questions What is the primary function of a vasodilator? Name two substances that act as vasodilators in the human body. How do vasodilators impact kidney function in terms of osmoregulation?
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