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Veins can collapse if too much negative pressure is used when withdrawing blood as the walls are rather thin.
Wiki User
∙ 14y ago
Wiki User
∙ 12y agoMaybe because you ate too much cholesterol-inducing foods, clogging your arteries. OR, maybe you had a serious blood clot, either way, its not good...
Wiki User
∙ 12y agoThe catheter goes through it and out the other side causing that section to collapse and blow the vein.
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What is a superficial vein in the leg?
The superficial veins of the legs connect to the deep veins through "penetrating veins" which run perpendicular to the skin from one to the other. The deep veins are essentially a column of blood running from your head to you feet and so when one is standing are under high pressure. In order to keep this pressure away from the frail superficial veins the penetrating veins have valves. When one of these valves goes bad the high pressure is allowed to go back to the superficial veins which blow up like balloons and become visible as what we call varicose veins (or "spider veins").
Where does the CO2 go?
It is brought back to the heart to be pumped through the lungs to be exhaled.
What types of veins are there?
There are three major categories of veins: superficial veins, deep veins, and perforating veins. All varicose veins are superficial veins; they lie between the skin and a layer of fibrous connective tissue called fascia.
What kinds of veins are there?
There are three types of veins, superficial veins that are just beneath the surface of the skin, deep veins that are large blood vessels found deep inside muscles, and perforator veins that connect the superficial veins to the deep veins.
What Veins in humans which ends in capillaries and not in larger veins?
Pulmonary veins
Is there veins in chicken wings?
Yes they do have veins because when i eat them have black veins :/
Which term is when veins swoolen veins in her legs?
Varicose veins.
What type of blood vessel carries the blood to the heart?
Veins
What are dilated veins called?
Varicose veins are called dialated veins
Do Grapevines have parallel leaf veins?
A grapevine has netted veins.
What are veins in a shark?
shark veins?
What is the meaning of veins close to the surface?
The scientific name for veins that are close to the surface is superficial veins. These are the veins you can see under your skin.
