Arteries carry blood away from the heart. Pulmonary arteries transport blood that has a low oxygen content from the right ventricle to the lungs. Systemic arteries transport oxygenated blood from the left ventricle to the body tissues.Blood is pumped from the ventricles into large elastic arteries that branch repeatedly into smaller and smaller arteries until the branching results in microscopic arteries called arterioles.ystemic arteries transport oxygenated blood from the left ventricle to the body tissues. Blood is pumped from the ventricles into large elastic arteries that branch repeatedly into smaller and smaller arteries until the branching results in microscopic arteries called arterioles.
(concentric action) the 'true' form of contraction of a muscle in which it shortens against a load (which may be only that of gravity on the relevant body part), and so does positive work. Hence concentric exercise: that in which the principal agonists act concentrically. See also muscle contraction.
noun. The definition of contraction is the lengthening or shortening of a muscle fiber or a word formed by combining the sounds of two longer words. 1  An example of a contraction is the action of the uterus during the birth process.2  An example of a contraction is the word doesn't from does not.oun. The definition of contraction is the lengthening or shortening of a muscle fiber or a word formed by combining the sounds of two longer words. 1  An example of a contraction is the action of the uterus during the birth process. 2  An example of a contraction is the word doesn't from does not.