The fourth finger of the left hand, believed to possess a vein that runs securely to the heart, is the finger we here in the US wear our wedding rings on. The vein of love or more amorously called the Vena Amoris, is from ancient times and is thought to originate with Eqypt.

Blood is found in blood vessels. Blood vessels (arteries, arterioles, capillaries, venules and veins) take blood to and from every part of your body.

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It brings oxygen and nutrients to all the parts of the body so they can keep working. Blood carries carbon dioxide and other waste materials to the lungs, kidneys, and digestive system to be removed from the body. Blood also fights infections, and carries hormones around the body.

The largest veins are the superior and inferior vena cava, and both drain directly into the right atrium of the heart. All veins of the systemic circulation eventually drain back into one of these.

A horizontal cut across the neck and throat will not only sever your Jugular Vein and cause death, but will also cut the trachea and ligaments that control movement of the head. A powerful slash across your Pectoral muscle will destroy your ability to throw punches with any power.

The superior vena cava carries blood from the brain and arms into the top of the right atrium. The inferior vena cava carries blood from the legs and abdominal cavity into the bottom of the right atrium. The vena cava are also called the “central veins”.

Veins must work against gravity to return blood the heart. The muscles of the leg help that process, and valves within the veins usually keep the moving blood from flowing back down toward the feet.

Veins are flexible, hollow tubes with flaps inside called valves. When your muscles contract, the valves open and blood moves through the veins. When your muscles relax, the valves close, keeping blood flowing in one direction through the veins.

When you exercise, your blood pressure rises and your veins are pushed closer to your skin. Once your blood pressure drops to normal, your hand veins become less prominent. Exercising on a regular basis, however, can make bulging hand veins permanent — especially if you do a lot of strength training exercises.

Veins appear blue because blue light is reflected back to our eyes. Blue light does not penetrate human tissue as deeply as red light does. As a result, veins that are close to the surface of the skin will be more likely to reflect blue light back to the eye.”

Their blood contains a high concentration of copper. When copper mixes with oxygen, it gives their blood its blue color.