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The great artery which carries the blood from the heart to all parts of the body except the lungs; the main trunk of the arterial system.

Of or pertaining to the aorta.

Inflammation of the aorta.

Any curvature in the form of an arch; as, the arch of the aorta. "Colors of the showery arch." Milton. Triumphal arch, a monumental structure resembling an arched gateway, with one or more passages, erected to commemorate a triumph.

nchi and their ramifications in the lungs. Bronchial arteries, branches of the descending aorta, accompanying the bronchia in all their ramifications. -- Bronchial cells, the air cells terminating the bronchia. -- Bronchial glands, glands whose functions are unknown, seated along the bronchia. -- Bronchial membrane,…

ame given to some parts that resemble in shape certain bulbous roots; as, the bulb of the aorta. Bulb of the eye, the eyeball. -- Bulb of a hair, the "root," or part whence the hair originates. -- Bulb of the spinal cord, the medulla oblongata, often called simply bulb. -- Bulb of a tooth, the vascular and nervous p…

One of the two main arteries of the neck, by which blood is conveyed from the aorta to the head.

or to the cavity of the abdomen. Coeliac artery (Anat.), the artery which issues from the aorta just below the diaphragm; -- called also coeliac axis. -- Coeliac flux, Coeliac passion (Med.), a chronic flux or diarrhea of undigested food.

any parts otherwise unnamed; as, the innominate artery, a great branch of the arch of the aorta; the innominate vein, a great branch of the superior vena cava. Innominate bone (Anat.), the great bone which makes a lateral half of the pelvis in mammals; hip bone; haunch bone; huckle bone. It is composed of three bones,…

In front, or on the ventral side, of the aorta.

e Lunar, n. -- Semilunar, or Sigmoid, valves (Anat.), the valves at the beginning of the aorta and of the pulmonary artery which prevent the blood from flowing back into the ventricle.