from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Anatomy A vein.
from the GNU version of the Collaborative International Dictionary of English
- n. A vein.
from The Century Dictionary and Cyclopedia
- n. In anatomy, a vein. See vein
- n. The superior or descending vena cava returns the blood from the head and neck, the upper limbs, and the whole of the thorax. It is formed by the junction of the right and left innominate veins, behind the junction of the first costal cartilage of the right side with the sternum, and descends nearly vertically to empty into the right auricle of the heart. It receives the pericardial and mediastinal veins and the large azygous vein. In vertebrates at large the two venæ cavæ are distinguished as postcaval and precaval veins. See cuts under circulation, diaphragm, embryo, heart, lung, pancreas, and thorax.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a blood vessel that carries blood from the capillaries toward the heart
He discovered the valve which guards the _foramen ovale_ in the fœtus; and he not only verified the observation of Etienne as to the valve-like fold guarding the entrance of each hepatic vein into the inferior vena cava, but he also fully described the _vena azygos_.
Now, we probably want to do another study just to be sure, but what's the value of innovation in vena cava filters if you aren't going to find out if they actually help patients.
Here's an example: there are, oh, on the order of at least 10 different companies all making a device called a vena cava filter.
Anal veins: those longitudinal unbranched veins extending from base to outer margin below the cubitus; the first anal, also termed vena dividens, q.v., is the 6th of the series starting from the base, and it may be followed by several others which are numbered in order to the inner margin.
The right ventricle sends its charge into the lungs by the vessel which is called vena arteriosa, but which in structure and function, and all other respects, is an artery.
The primitive or principal vein (Figure 1.100 v) lies below the gut, in the middle line of its ventral side, and is therefore also called the vena subintestinalis; it conducts carbonised or venous blood back from the body to the gills.
All have their origin or commencement, at the ends of the arteries as I before stated: -- the veins as they proceed from the extremities toward the heart, become larger by numerous branches intercepting each other and uniting, until they are all concentrated in two canals, termed vena cava.
The Cherokee Physician, or Indian Guide to Health, as Given by Richard Foreman, a Cherokee Doctor; Comprising a Brief View of Anatomy, With General Rules for Preserving Health without the Use of Medicines. The Diseases of the U. States, with Their Symptoms, Causes, and Means of Prevention, are Treated on in a Satisfactory Manner. It Also Contains a Description of a Variety of Herbs and Roots, Many of which are not Explained in Any Other Book, and their Medical Virtues have Hitherto been Unknown to the Whites; To which is Added a Short Dispensatory.
The circulation of the blood in the liver differs from this general system; for the veins which drink up the refluent blood from those arteries, which are spread on the bowels and mesentery, unite into a trunk in the liver, and form a kind of artery, which is branched into the whole substance of the liver, and is called the vena portarum; and from which the bile is separated by the numerous hepatic glands, which constitute that viscus.
“But this one is not like one of those poems, Robra, this is from the bowels of my heart, from the depths of my aorta, from the core of my superior vena cava,” he said, leaning back against the red sofa, and gazing at her with those deep blue eyes.
During this surgery the superior vena cava, a large vein that carries deoxygenated blood from the upper body into the heart, is disconnected from the heart and attached to the pulmonary artery.