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Related to innominate vein: azygos vein


blood vessel that returns blood to the heartheart,
muscular organ that pumps blood to all parts of the body. The rhythmic beating of the heart is a ceaseless activity, lasting from before birth to the end of life. Anatomy and Function

The human heart is a pear-shaped structure about the size of a fist.
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. Except for the pulmonary vein, which carries oxygenated blood from the lungs to the heart, veins carry deoxygenated blood. The oxygen-depleted blood passes from the capillariescapillary
, microscopic blood vessel, smallest unit of the circulatory system. Capillaries form a network of tiny tubes throughout the body, connecting arterioles (smallest arteries) and venules (smallest veins).
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 to the venules (small veins). The venules feed into larger veins, which eventually merge into the superior and inferior vena cavae, large vessels that consolidate the blood flow from the head, neck, and arms and from the trunk and legs, respectively (see also circulatory systemcirculatory system,
group of organs that transport blood and the substances it carries to and from all parts of the body. The circulatory system can be considered as composed of two parts: the systemic circulation, which serves the body as a whole except for the lungs, and the
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). The vena cavae direct the blood back into the heart. The walls of a vein are formed of three layers like the walls of an artery. However, these layers are thinner and less muscular and collapse when empty. With such notable exceptions as the portal system, most veins contain valves, formed by pouches in their inner coats, that keep the blood from flowing backward. Valves are most numerous in the veins of the extremities, and are absent in the smallest veins. Veins are subject to inflammation, dilatation or enlargement (as in a varicose veinvaricose vein,
superficial vessel that is abnormally lengthened, twisted, or dilated, seen most often on the legs and thighs. Varicose veins develop spontaneously, and are usually attributed to a hereditary weakness of the vein; the valves in the vein that keep the blood
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), rupture, and blockage by blood clots (thrombosisthrombosis
, obstruction of an artery or vein by a blood clot (thrombus). Arterial thrombosis is generally more serious because the supply of oxygen and nutrition to an area of the body is halted.
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a mineral body filling a fissure in rock. Simple veins are single mineralized fissures; complex veins are clusters of interwoven fissures or of zones of fracturing or schist formation. According to their morphological details veins are called lenticular, chambered, saddle-reef, ladder, or feather. Veins that cut across the layers of enclosing rock are called intersecting veins; those that lie in conformity with the stratification and dip of the enclosing rock are called stratified. The length of veins of mineral products varies from 1 m or less to 200 km—for example, the veins of gold ore in California. In terms of dip some veins taper off close to the earth’s surface, and others, for example, the vein of the Kolar deposit in India, are worked at a depth of more than 3 km. A vein has a geological and a working thickness, the minimum thickness for exploiting the vein deposit. Depending on the value of the constituent minerals, the working thickness of a vein may vary from several centimeters to dozens of meters.


A relatively thin-walled blood vessel that carries blood from capillaries to the heart in vertebrates.
One of the vascular bundles in a leaf.
A mineral deposit in tabular or shell-like form filling a fracture in a host rock.
(invertebrate zoology)
One of the thick, stiff ribs providing support for the wing of an insect.
A venous sinus in invertebrates.


1. any of the tubular vessels that convey oxygen-depleted blood to the heart
2. any of the hollow branching tubes that form the supporting framework of an insect's wing
3. any of the vascular strands of a leaf
4. a clearly defined mass of ore, mineral, etc., filling a fault or fracture, often with a tabular or sheetlike shape
5. a natural underground watercourse
References in periodicals archive ?
The goiter extended to the bifurcation of the trachea on the dorsal side of the superior vena cava, the innominate vein, the aortic arch, and the ventral side of the trachea.
It was unlikely that the dilated right atrium was an acute change considering that his left superior pulmonary vein had been delivering excess volume return to the right atrium via the innominate vein, his entire life.
Successful pacing lead implantation has been reported after angioplasty and stent dilation of superior vena cava and innominate vein obstructions (16).
Here, we reported a male patient, whose imaging studies revealed an ectopic parathyroid gland, located in the lower part of the superior mediastinum, below the innominate vein. We performed parathyroidectomy, through a traditional transcervical incision, avoiding more invasive procedures and reducing the cost of treatment.
A large mass encasing the innominate vein was identified in the anterior and superior aspect of the mediastinum.The mass was found to be in close approximation of the pericardium, left phrenic nerve and the vagus nerve with the fibrous pericardium adherent to serous pericardium.
The TD was located between the internal jugular vein (ventral) and the vertebral vein (dorsal), the ultrasonographic visible part of the TD ranged 3–5 cm distal from the venous angle, where the jugular vein and subclavian vein join as innominate vein. In healthy volunteers, the TD walls were visualized clearly and the lymph walls were seen to be smooth and continuous.
With type I, having a supracardiac connection (50%), the common pulmonary trunk joins the left vertical vein, the innominate vein, or the superior vena cava.
B: Coronal CT of the cyst demonstrates its cervical and mediastinal components with splaying of the innominate veins.
It contains the origins of the Sternohyoidei and Sternothyreoidei and the lower ends of the Longi colli; the aortic arch; the innominate artery and the thoracic portions of the left common carotid and the left subclavian arteries; the innominate veins and the upper half of the superior vena cava; the left highest intercostal vein; the vagus, cardiac, phrenic, and left recurrent nerves; the trachea, esophagus, and thoracic duct; the remains of the thymus and some lymph glands.
When portions of the subclavian and innominate veins and superior vena cava cannot be visualized, which as noted is a common situation with US, reliable evaluation can be performed with catheter venography, with a contrast injection into the antecubital vein or via basilic or brachial vein access, with catheterization of the subclavian vein, under fluoroscopic control.
Fistula formation with the common aortic arch, common carotid artery, superior and inferior thyroid artery and innominate veins have also been reported.3