Carotid artery disease is also called carotid artery stenosis. The term refers to the narrowing of the carotid arteries. This narrowing is usually caused by the buildup of fatty substances and cholesterol deposits, called plaque. Carotid artery occlusion refers to complete blockage of the artery.When the carotid arteries are obstructed, you are at an increased risk for a stroke, the third leading cause of death in the U.S.his narrowing is usually caused by the buildup of fatty substances and cholesterol deposits, called plaque. Carotid artery occlusion refers to complete blockage of the artery. When the carotid arteries are obstructed, you are at an increased risk for a stroke, the third leading cause of death in the U.S.
Best Answer: The closest airport to Washington, DC (includes the Smithsonians) is Reagan National Airport. Best Metro is the blue line to Smithsonian Stop, about a 20 minute ride. Please pick a Best Answer, even if it is not mine. That way we can tell if we really do help people.
Maps and Directions. The Smithsonian Information Center in the Castle is centrally located at 1000 Jefferson Dr., SW, Washington, D.C. Ten of the Smithsonian museums in Washington, D.C., span an area from 3rd to 14th Streets between Constitution Avenue and Independence Avenue, approximately 1 mile (1.6 km).