Veins

The valves help counter the effect of gravity by preventing the fluid in the vessels from "falling down."

The Testicular Vein and then into the Penisial Vein.

The superior vena cava (also known as the precava) is a large diameter, yet short, vein that carries deoxygenated blood from the upper half of the body to the heart's right atrium.

Venography is an x-ray test that provides an image of the leg veins after a contrast dye is injected into a vein in the patient's foot.

There is no specific prevention for renal vein thrombosis. Preventing dehydration reduces the risk that it will occur.

Whether the tumor is cancerous or not it can grow rapidly and cause serious problems and some tumors have roots or 'feelers' which can tangle throughout other organs. This is something you MUST discuss with your doctor or specialist. If they suggest it be removed then it should be. Be prepared for a 'yes' from your doctor and before you keep your appointment with the doctor write down any questions you may have and then write the answers down. If you don't understand what the doctor is saying, don't be afraid to ask him to repeat the answer or explain in a more simplified way. The more you know about it and any risks the better you will feel.

Veins tend to be more superficial, meaning they lie closer to the surface of the skin. Arteries usually, but not always, run deeper in the tissue than veins.

Blood leaves the heart in arteries at very high pressure. Once the blood has gone through the capillaries and entered the veins, the pressure is lower, because the blood has travelled further. Veins are adapted for this decrease in pressure in two main ways. Firstly, they have a larger lumen relative to that of arteries, to allow more blood through in a given time. Secondly, veins have valves to prevent the backflow of blood; this is especially necessary in the legs, where venal blood is travelling against gravity.

I don't have your answer yet, but I'll try to remember to keep you posted once I get mine. I have the same thing. So far, I found the Angioma Alliance on the internet. There are apparently some studies going on about this in various universities.

The external iliac vein is a normal part of the human anatomy. It is not a disease.

Ofcourse not, you don't see them, your fingernails can't bleed and the body doesn't see a need to put nerves in it.

retromandibular-vein-1

yes

Probably the inf mesenteric vein

The Coronary Sinus

There are no significant precautions concerning insertion of a vena cava filter.

In the lower right side of the heart. when the heart pumps it causes the coronary veins to pump outward.

breath and rub the site

Veins carry blood from the extremities of the circulatory system to the heart.

We are not doctors on this site, but we do provide SOME research to get you off to a kicking start. This means we will calm your fears or tell you to get to the doctor immediately rather than risk our lack of knowledge regarding your health. The specialists have the answers! Please stay off the Internet regarding your condition because it's simply too complex for most laymen to understand and one could get the wrong impression and worry over nothing. Already you feel you have another disease and it's highly possible you DO NOT! You don't need stress, you need rest and work closely with your Cardiologist and family doctor. Please write your concerns down and make an appointment right away so you will relieve your mind. Bypass surgery has a high success rate. The following was taken off a Cardiologist's site: A large number of studies have shown that after coronary artery bypass grafting (CABG), a transient creatinine kinase MB (CK-MB) elevation above the upper reference limit is very common. The cause of this enzyme increase and its clinical significance have long been uncertain and controversial, but recent reports indicate that after CABG, elevated post-operative concentrations of CK-MB correlate to an increased risk of long-term mortality. After percutaneous coronary intervention (PCI), CK-MB elevation has been shown to correlate to a finding of myocardial necrosis. Such an association has to date never been proved in CABG patients. The lack of a diagnostic gold standard and absence of an established definition of perioperative myocardial infarction after CABG have promoted the use of different diagnostic criteria, which in turn has contributed to a wide variation in the reported incidence of perioperative myocardial infarction, ranging from 2% to 82%.

It is quite common what you are having. It is VERY important that you write down any questions you may have regarding your high levels of troponin and MK-MB fraction levels and what to expect after your cardiac bypass surgery. I URGE YOU to take a your partner or a good friend along with you as an extra set of ears. You are the one that is worried (don't blame you) and you may misinterpret what the specialist is telling you. There are some people that will go through a depressive period after heart surgery, but this is treatable by your physician and will eventually subside. My husband has Atrial Fibrillation and a slightly enlarged heart and I always go in with him to take notes and ask questions. It is common for the person with the heart condition to be nervous and perhaps miss the interpretation of what the doctor is telling them.

Varicose Veins

2nd answer:

. . . or, blood vessels with less oxygen are veins?

varicocele

When someone undergoes spider vein surgery, their doctor will typically inject a chemical agent into the vein which will cause reduced blood flow and fading of the vein.

Yes.