pulmonary trunk

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1. the part of the body to which the head and limbs are attached; called also torso.
2. a larger structure, such as a vessel or nerve, from which smaller divisions or branches arise, or that is created by their union. adj., adj trun´cal.
brachiocephalic trunk truncus brachiocephalicus.
celiac trunk the arterial trunk arising from the abdominal aorta and giving origin to the left gastric, common hepatic, and splenic arteries.
encephalic trunk brainstem.
lumbosacral trunk a trunk formed by union of the lower part of ventral branch of the fourth lumbar nerve with the ventral branch of the fifth lumbar nerve.
lymphatic t's the lymphatic vessels (right or left lumbar, intestinal, right or left bronchomediastinal, right or left subclavian, and right or left jugular trunks) that drain lymph from various regions of the body into the right lymphatic or thoracic duct.
pulmonary trunk a vessel arising from the conus arteriosus of the right ventricle and bifurcating into the right and left pulmonary arteries.
sympathetic trunk two long ganglionated nerve strands, one on each side of the vertebral column, extending from the base of the skull to the coccyx.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

pul·mo·nar·y trunk

origin, right ventricle of heart; distribution, it divides into the right pulmonary artery and the left pulmonary artery, which enter the corresponding lungs and branch along with the segmental bronchi.
Farlex Partner Medical Dictionary © Farlex 2012

pul·mo·nar·y trunk

(pul'mŏ-nar-ē trŭngk) [TA]
Origin, right ventricle of heart; distribution, it divides into the right pulmonary artery and the left pulmonary artery, which enter the corresponding lungs and branch along with the segmental bronchi.
Synonym(s): truncus pulmonalis [TA] , arteria pulmonalis, pulmonary artery.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
At CS19, in the aorta and the pulmonary trunk wall, more a-SMA-positive cells were observed than at CS16 [Figure 5]b, [Figure 5]d and [Figure 6]a, [Figure 6]b, [Figure 6]c.
The diagnosis was infundibular pulmonic stenosis with poststenotic dilatation of the proximal pulmonary trunk. Additionally, narrowing of the aortic lumen diameter associated with epidemiologic data was suggestive of atherosclerosis.
Different surgical approaches are used for the reimplantation of the anomalous LCA depending on the various origin sites of the anomalous artery (inner wall, lateral wall, and posterior wall of the pulmonary trunk).
In the first one, the right coronary artery was originating from the pulmonary trunk from its anterior aspect, turned to the right, reached the atrioventricular sulcus and coursed normally.
The back pressure of blood in the aorta against the heart's aortic semilunar valve is higher than that against the pulmonic semilunar valve of the pulmonary trunk. The pulmonary blood vessels are relatively short and wide, and so offer little resistance to blood flow.
CT of the thorax revealed a 4 x 7-cm mass lesion adjacent to the anterior mediastinum that could not be separated from the aorta and pulmonary trunk (figure 3, B).
However, a single pulmonary trunk arose from the common trunk prior to the arch and branched to the right and left pulmonary arteries.
Yamamoto ME, Jones JW, and McManus BM: Fatal dissection of the pulmonary trunk: an obscure consequence of chronic pulmonary hypertension.
They encircle the base of the two arteries leaving the heart (aorta and pulmonary trunk) and the openings between the atria and the ventricles.
Lymphatics were not found in the semilunar valves of the aorta and the pulmonary trunk of human, pig and dog hearts [17, 28, 33, 34].
The left coronary artery arose from the right coronary sinus of Valsalva and coursed between the aorta and pulmonary trunk in the wall of the aorta.
Specifically, the wrong sinus coronary artery origin, that is, the left main artery arising from the right anterior sinus (ALMCA) and the right coronary artery originating from the left sinus (ARCA), with a proximal course between aorta and pulmonary trunk, are the most frequent occurrences of CCAA 9-14.

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