any of several arteries that distribute blood to the muscles and organs of the thorax: used as a replacement artery in coronary bypass surgery.
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Origin of thoracic artery
First recorded in 1720–30
Also called mammary artery.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Medicine definitions for mammary artery
The internal mammary artery, with origin in the subclavian artery and bifurcations to the musculophrenic and superior epigastric arteries; internal thoracic artery.
The external mammary artery, with origin in the axillary artery and distribution to the muscles of the chest and mammary gland; lateral thoracic artery.
An artery with origin in the axillary artery, with distribution to the muscles of the chest, and with anastomoses to the branches of the suprascapular, internal thoracic, and thoracoacromial arteries; superior thoracic artery.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.