2. Not yielding the desired outcome; fruitless: "He made a vain attempt to pass his chemistry test."
When the newly graduated doctor wrote that his patient's blood vane needed medical attention, the head physician said that it was the first time he had ever heard of the wind influencing a vain blood vein.
It lies on the left side and at the eighth thoracic vertebra it joins the hemiazygos vein or crosses to the right side to join the azygos vein directly.
It arises from the ascending lumbar vein, passes up on the left side of the vertebrae to the eighth thoracic vertebra, where it may receive the accessory branch, and crosses over the vertebral column to open into the azygos vein.
2. Relating to, or located in the region of the neck or throat; especially, two pairs of large veins, internal and external, that return blood to the heart from the head and neck..
3. Pertaining to any of certain large veins of the neck; especially one (external jugular vein) collecting blood from the superficial parts of the head or one (internal jugular vein) collecting blood from within the skull.
4. A large vein on the bottom surface of the neck that may be used to collect blood samples or to place catheters (thin flexible tubes which can be inserted into the body to permit the introduction or the withdrawal of fluids or to keep passageways open).
5. The most important or vulnerable part of something.
6. Etymology: from Modern Latin jugularis, from Latin jugulum, "collarbone, throat, neck"; diminutive (small version) of jugum, "yoke"; related to iungere, "to join".
This condition may occur in almost any part of the body, but it is most common in the lower extremities and in the esophagus.
It shows up as pain in the feet and ankles, swelling, and ulcers on the skin characterize this condition. Severe bleeding occurs if the vein is injured.
The condition is caused by incompetent venous valves that may be acquired or congenital. The development of varicose veins is promoted and aggravated by pregnancy, obesity, and occupations that require prolonged standing.
Esophageal varices are caused by portal hypertension that accompanies cirrhosis (abnormal liver condition characterized by irreversible scarring) of the liver.
More about Varicose Veins
Varicose veins are dilated tortuous (with many turns or bends) veins occurring in about fifteen per cent of adults; women more than men.
They most commonly occur in the legs, but they may also occur in the anal canal (hemorrhoids) and in the esophagus (as a result of a liver disease).
This flow, back towards the heart, is aided by valves within the veins. When these valves fail, increased pressure is exerted on the blood vessels leading to dilatations (dilated or stretched beyond normal dimensions) known as varicose veins.
The deoxygenated form of hemoglobin (deoxyhemoglobin) in venous blood makes it appear dark and the veins are part of the afferent wing of the circulatory system which returns blood to the heart.