Migraine headaches are believed to result from narrowing of the blood vessels followed by the expansion of those same vessels.
There are three forms of blood vessels: Arteries carry blood far away from your heart. Veins bring blood again toward your heart. Capillaries, the smallest blood vessels, connect arteries and veins.
This substantial system of blood vessels - arteries, veins, and capillaries - is over 60,000 miles lengthy. it truly is long sufficient to go round the sector more than twice! Blood flows continuously via your body's blood vessels.
Blood vessels include the handiest easy muscle cells. those muscle cells reside in the tunica media in conjunction with elastic fibers and connective tissue.
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