Aorta


Aorta: The largest artery in the body, the aorta arises from the left ventricle of the heart, goes up (ascends) a little ways, bends over (arches), then goes down (descends) through the chest and through the abdomen to where ends by dividing into two arteries called the common iliac arteries that go to the legs.

Anatomically, the aorta is traditionally divided into the ascending aorta, the aortic arch, and the descending aorta. The descending aorta is, in turn, subdivided into the thoracic aorta (that descends within the chest) and the abdominal aorta (that descends within the belly).

The aorta gives off branches that go to the head and neck, the arms, the major organs in the chest and abdomen, and the legs. It serves to supply them all with oxygenated blood. The aorta is the central conduit from the heart to the body.

Read Also:

  • AOA

    AOA: Abbreviation for Alpha Omega Alpha, the medical honor society, the medical school equivalent of Phi Beta Kappa, in the United States and Canada. Membership is by election for distinguished academic achievement. Medical students, house officers, and medical school alumni and faculty are eligible for election. AOA is also the abbreviation for the American Osteopathic […]

  • Aqueduct of Sylvius

    Aqueduct of Sylvius: A canal between the third and fourth ventricles in the brain within the system of four communicating cavities that are continuous with the central canal of the spinal cord. The ventricles are filled with cerebrospinal fluid, which is carried by the aqueduct of Sylvius.

  • Aqueduct of the midbrain

    Aqueduct of the midbrain: A canal that communicates between the third and fourth ventricles in a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of the two lateral ventricles, the third ventricle and the fourth ventricle: Lateral ventricles: The lateral […]

  • Aqueous humor

    Aqueous humor: In medicine, humor refers to a fluid (or semifluid) substance. Thus, the aqueous humor is the fluid normally present in the front and rear chambers of the eye. It is a clear, watery fluid that flows between and nourishes the lens and the cornea; it is secreted by the ciliary processes. The humors […]

  • Arabidopsis thaliana

    Arabidopsis thaliana: A plant belonging to the mustard family. Arabidopsis was the first plant genome to be sequenced, and is a popular tool for understanding the molecular biology of many plant traits, including flower development and light sensing. See also: Arabidopsis thaliana genome.


Disclaimer: Aorta definition / meaning should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. All content on this website is for informational purposes only.