Veins are thin blood vessels that carry blood from various body parts to the heart. These have valves in them to prevent back flow of blood.

5,185 Questions

What is a blown vein?

A blown vein can be caused by a needle insertion into the vein. Sometimes it can be caused by trauma to the vein without actually puncturing it. If I were to insert a needle into your arm to start an IV, I will pierce the skin and hopefully end up in your vein. However, if I aim too deep on accident or in an attempt to catch a rolling vein, I may pierce through the other side of the vein causing the blood to leak out thus making the vein unusable. I can also try to draw blood through the needle then "flush" it with normal saline and cause the vein to blow even though the IV was a good stick. Blown veins are visible by swelling, redness, bruising, etc. The initial appearance is an enlargement of the vein. It is very important to keep a lot of pressure on the vein after pulling out of the needle to reduce these symptoms! Pressure will keep the blood from spreading beneath the skin. Also try to apply icepacks to reduce inflammation.


What is the oxygen saturation of the pulmonary veins?


The Difference Between

What is the difference between arteries and veins?

Veins are blood vessels carrying blood towards the heart, whereas arteries bring blood away from heart.

Mostly, arteries contain oxygenated blood, and veins contain carbon dioxide-rich and oxygen-poor blood; however, there is one exception. The artery leading to the lungs from the heart does not contain any oxygen, and the vein leading from the lungs to the heart does. This is so the oxygen from the lungs is brought to the heart in order for it to work. Everywhere else, the oxygenated vessels (arteries) carry blood to the rest of the body.

Histologically, veins have a large, floppy irregular lumen and a thinner wall. They also contain valves to prevent backflow when blood is being taken back up to the heart. Arteries usually have a round lumen and thick walls, but no valves.

Arteries generally have higher pressure and veins have lower pressure.

The blood in the veins is visibly less red than blood in your arteries, because the hemoglobin has been removed.


What is the function of portal vein?

To carry blood from the liver back into the general circulation.


What veins carry oxygen-rich blood?

With three exceptions, arteries carry oxygen-rich blood from the lungs to the body organs and the veins carry oxygen poor blood and waste products to the heart.

The exceptions are:

  • the pulmonary veins return blood from the lungs to the heart;
  • the portal veins receive oxygenated blood from the pyloric, gastric, cystic, superior mesenteric, and splenic veins and carry it to the liver;
  • the umbilical vein carries blood to the fetus from the mother's placenta.

Why are the veins in your hand swollen?

close to the skin surface and the skin is thinner/ less fat. Very normal unless more prominent than normal.


Do you apply heat or cold on varicose veins?

Heat can make the varicose vein more acute. Hot weather, hot baths are not good for varicose veins and can make the symptoms even worse. Even it can make the symptoms more acute because you may experience more swelling, heaviness and more aching or cramps. Whenever your legs are aching, taking a cold shower can help.


Can you pop the jugular vein?



Is it bad for veins to turn blue?

Not at all. Veins should mostly always be blue, un-oxygenated blood has a deeper purple-ish tint to it, through the skin we see it as a blue color. Arteries are slightly too deep for us to view, though we can feel our pulses through them

The Difference Between

What are the differences between an artery and a vein?

Arteries carry blood away from the heart to the other parts of the body. Arteries also have thicker walls as the blood pressure is much higher having a closer proximity to the heart. Veins carry the blood back from the other areas of the body to the heart.

Simply put, an artery carries blood out of the heart, and a vein carries blood into the heart.


Which is more likely to be damaged in pterion damage either middle meningeal artery or the vein?

Pterion is the junction of the greater wing of the sphenoid, squamous temporal, frontal, and parietal bones in the lateral wall of the skull. Fracture of the pterion can be life-threatening because it overlies the anterior branches of the middle meningeal vessels, which lie in grooves on the internal aspect of the lateral wall of the calvaria. The pterion is two fingers' breadth superior to the zygomatic arch and a thumb's breadth posterior to the frontal process of the zygomatic bone. A hard blow to the side of the head may fracture the thin bones forming the pterion, producing a rupture of the anterior branch of the middle meningeal artery crossing the pterion. Middle meningeal artery is a branch of the Maxillary artery; branch of the external carotid artery. As blood is pumped against the gravity, pressure inside the external carotid artery is high. Therefore in a fracture arteries can bleed profusely. But the middle meningeal veins are more superficial. According to experienced neurosurgeons veins are easily damaged due to above reason. The resulting hematoma exerts pressure on the underlying cerebral cortex. An untreated middle meningeal artery hemorrhage may cause death in a few hours. Therefore it is wise to mention that it damages to the middle meningeal vessels.


What happens if barbed wire stabs through your vein?

You will bleed and you may get tetanus. Either of those is a good reason to see your doctor.

Apply direct pressure to the wound with a clean (sterile, if you have it) dressing and elevate the wound. Do not remove the dressing because that will start it bleeding again. If the victim bleeds through the dressing, add another on top. The victim is in less danger of bleeding to death from a punctured vein than artery but could still loose enough blood to cause hypovolemic shock. Keep the victim warm and elevate the legs to get blood to the brain if symptoms of shock appear.

Medical Terminology

What is the medical term meaning suture of a vein?

Venorrhaphy is the medical term meaning suture of a vein.


Is the hepatic portal vein the same thing as the mesenteric artries?

NO.Portal vein is a vein,but is an important supply to liver which carries nutrients absorbed from gastrointestinal tract and spleen.Meseteric arteries are the arteries supplying intestine.On the other hand superior mesenteric vein is a tribuatory to portal vein.


Which veins have names that do not correspond to arterial names?

Azygos and its accessories, left brachiocephalic, cephalic, basilic, the 2 saphenous, coronary sinus etc


What is the longest vain in the body?

the great saphenous vein

Oral Health and Dental Care

If you feel a terrible throbbing under and around your right eye tingling so bad you can't work or drive could you have an abscessed tooth?

That sounds like either sinus pain and pressure or possibly an abcessed tooth. Do you have other signs of an abcess? Do you have the bubbled up gum tissue, etc.? Obviously, your best bet is to go see your doctor and dentist. Hope you find an answer. God bless, Cathy

Yes, this can indicate an abcessed tooth: This pain under the eye happened to me, and I thought I had a sinus infection My tooth did not hurt; I could chew with it and press on it without it hurting. The pain under the eye was bad enough that I stayed home from work one day and planned to go to the doctor. But by the time I was going to call for an appointment, the pain was subsiding. A few days later I had a large puffiness in my gum below where the pain under the eye was. This was also sore (but not as bad); however, the swelling went down. No more pain at all. About a month later I went to the dentist for a routine cleaning and checkup. Since I still feel a slight soreness when pressing under my eye, I had an x-ray taken. The dentist said I had an abcessed tooth. He has referred me to another dentisit for a root canal.

Whats the process of a root canal? What is the price range for one? I have an abscessed tooth and it hurts my eye worse than the tooth pain.


Why do veins contain non return values?

If veins didn't contain non-return valves, when the (largely) skeletal muscles that assist in venous return weren't contracted, the blood contained therein would tend to fall, under the force of gravity, and pool in the lower body. These one-way valves help to minimize this phenomenon. Failure of these valves is part of the reason older people and those who stand for long periods of time (cashiers, guards, etc.) tend to learn to sequentially contract (low to high) muscle groups--to facilitate the pumping action of skeletal muscles. It's also why many such people wear compressive garmets, usually leggings.

Blood Types

Is blood blue or red?

Blood that contains hemoglobin (such as in humans and other vertebrates) is always red. The reason veins appear to be blue is due to the lack of oxygen. If you hold your hand up to a light source, your hand will glow red because of the blood being red.


What receives blood from the superior vana cava?

right atrium.


What is a mesocaval shunt?

A mesocaval shunt connects the superior mesenteric vein (another part of the portal vein) to the inferior vena cava.


How are veins specialized?

Veins have valves that prevent blood from pooling up in your extremities.


What is the normal range of hemoglobin content in human beings?

The normal range of haemoglobin for a man is 13.5 to 17.5 g/dl and for a woman is 11.5 to 15.5 g/dl.

AnswerThe normal range of haemoglobin for a man is 13.5 to 17.5 g/dl and for a woman is 11.5 to 15.5 g/dl. AnswerThe normal range of haemoglobin for a man is 13.5 to 17.5 g/dl and for a woman is 11.5 to 15.5 g/dl. AnswerThe normal range of haemoglobin for a man is 13.5 to 17.5 g/dl and for a woman is 11.5 to 15.5 g/dl. AnswerThe normal range of haemoglobin for a man is 13.5 to 17.5 g/dl and for a woman is 11.5 to 15.5 g/dl. AnswerThe normal range of haemoglobin for a man is 13.5 to 17.5 g/dl and for a woman is 11.5 to 15.5 g/dl. AnswerThe normal range of haemoglobin for a man is 13.5 to 17.5 g/dl and for a woman is 11.5 to 15.5 g/dl.

What is the thespian vein?

Thespian veins are small cardiac veins which allow for an alternative drainage pattern for cardiac capillaries. They open directly into the corresponding heart chambers at their locations.

Thespian veins have clinical importance in that they are the mechanism by which imaging agents are dispersed in the heart for angiograms.


How can you make veins more prominent?

The main way is to pump your fist while restricting circulation. This is the method used when donating blood. There are dietary ways to do it but these are not advised.


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