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| nerve tissue of the brain and spinal cord that contains fibers and nerve cell bodies and is a dark reddish-gray color |
| ductless glands above the kidneys, consisting of a cortex producing steroidal hormones, and a medulla producing epinephrine and norepinephrine |
| pulmonary artery | |
| —n | |
| either of the two arteries that convey oxygen-depleted blood from the heart to the lungs | |
pulmonary artery n.
An artery that enters the hilus of the right lung, with branches distributed with the bronchi; right pulmonary artery.
An artery that enters the hilus of the left lung, with branches distributed with the bronchi; left pulmonary artery.
| pulmonary artery
The artery that carries blood with low levels of oxygen from the right ventricle of the heart to the lungs. |