coronary artery

either of two arteries that originate in the aorta and supply the heart muscle with blood. See illus. under heart.
[1735-45; so called from its crownlike envelopment of the heart]

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      one of two blood vessels that branch from the aorta close to its point of departure from the heart and carry oxygen-rich blood to the heart muscle. Both arteries supply blood to the walls of both lower chambers (ventricles) and to the partition between the chambers. The right coronary artery supplies blood to the right upper chamber (atrium), while the left supplies the left atrium. Blockage of any branch of the coronary arteries causes death of a portion of the heart tissue when it is deprived of oxygen-rich blood (see coronary heart disease).

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Universalium. 2010.

Look at other dictionaries:

  • coronary artery — n either of two arteries that arise one from the left and one from the right side of the aorta immediately above the semilunar valves and supply the tissues of the heart itself …   Medical dictionary

  • coronary artery — n one of the two arteries that supply blood to the heart …   Dictionary of contemporary English

  • coronary artery — noun the artery that branches from the aorta to supply blood to the heart (Freq. 2) • Syn: ↑arteria coronaria • Hypernyms: ↑artery, ↑arteria, ↑arterial blood vessel • Hyponyms: ↑ …   Useful english dictionary

  • coronary artery — UK / US noun [countable] Word forms coronary artery : singular coronary artery plural coronary arteries medical either of the two arteries that carry blood to the heart …   English dictionary

  • coronary artery — noun An artery arising from aorta …   Wiktionary

  • coronary artery — /ˌkɒrənri ˈatəri/ (say .koruhnree ahtuhree) noun an artery supplying blood to the heart …   Australian English dictionary

  • coronary artery — noun Date: 1741 either of two arteries that arise one from the left and one from the right side of the aorta immediately above the semilunar valves and supply the tissues of the heart itself …   New Collegiate Dictionary

  • coronary artery —    Either of two arteries arising in the aortic sinuses that supply the heart tissue with blood …   Forensic science glossary

  • coronary artery — one of two blood vessels that supply blood to the tissues of the heart …   English contemporary dictionary

  • coronary artery — cor′onary ar′tery n. anat. either of two arteries that originate in the aorta and supply the heart muscle with blood …   From formal English to slang

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