The British
Medical Association
ILLUSTRATED
MEDICAL
DICTIONARY
coronary
Any structure that encircles like
a crown. The term usually refers to the
coronary arteries
encircling the heart. It is
also sometimes used as a nonmedical
term for a heart attack (see
myocardial
infarction).
coronary artery
Either of the 2 main
arteries
that supply the tissues of the
heart with
oxygen-rich
blood.
These
arteries, known as the left and right main
coronary arteries, arise directly from the
aorta.
The term coronary artery is also
applied to any of the arteries that branch
off from the main coronary arteries, such
as the left circumflex artery and the left
anterior descending artery. Blockage of a
coronary artery as a result of
athero-
sclerosis
can lead to
myocardial infarction.
(See also
coronary artery disease.)
vena cava
aorta
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