Category: Aq-Ar

  • Arteriosclerosis

    Hardening and thickening of the walls of the arteries. Arteriosclerosis can occur because of fatty deposits on the inner lining of arteries (atherosclerosis), calcification of the wall of the arteries, or thickening of the muscular wall of the arteries from chronically elevated blood pressure (hypertension).

  • Arteriole

    A small branch of an artery that leads to a capillary. The oxygenated hemoglobin (oxyhemoglobin) makes the blood in arterioles (and arteries) look bright red.

  • Arteriohepatic dysplasia

    Also known as Alagille syndrome, this ia a genetic disorder characterized by jaundice in the newborn period, liver disease with cholestasis, peripheral pulmonic stenosis and unusual face. Children with Alagille syndrome usually present with jaundice (yellowing of the skin and whites of the eyes) in the newborn period. Cholestasis (stagnant flow of bile from the liver) then develops with puritis (itching), stools without the usual yellowing…

  • Arteriogram

    An X-ray in which an injection of dye shows blood vessels.

  • Arteries, coronary

    The vessels that supply the heart muscle with blood rich in oxygen. They are called the coronary arteries because they encircle the heart in the manner of a crown. The word “coronary” comes from the Latin “corona” and Greek “koron” meaning crown. Like other arteries, the coronaries may be subject to arteriosclerosis (hardening of the arteries). There are a number…

  • Arterial tension

    The pressure of the blood within an artery, the arterial pressure. Also called the intra-arterial pressure.

  • Arterial blood gas (ABG)

    The sampling of the blood levels of oxygen and carbon dioxide within the arteries, as opposed to the levels of oxygen and carbon dioxide in venous blood. Typically the acidity, or pH, of the blood is measured simultaneously with the gas levels in ABG sampling.

  • Arterial aneurysm

    An aneurysm involving an artery.

  • Arteria femoralis

    The continuation of the external iliac artery after it passes under the inguinal ligament. The femoral arteries supply oxygenated blood from the heart to the lower extremities.

  • Artemsisia annua

    A Chinese herb (qinghaosu or sweet wormwood) from which is extracted the antimalarial agent artemisinin.