Question: What Is The Biggest Vein?

The great saphenous vein (GSV, alternately “long saphenous vein”) is a large, subcutaneous, superficial vein of the leg.

It is the longest vein in the body, running along the length of the lower limb, returning blood from the foot, leg and thigh to the deep femoral vein at the femoral triangle.All the arteries of the body, save the pulmonary arteries, stem from the aorta or one of its main branches.

Vena Cava are large veins that return deoxygenated blood from the body into the heart.

In humans they are called the superior vena cava and the inferior vena cava, and both empty into the right atrium.Near the region anterior to the cubital fossa, in the bend of the elbow joint, the basilic vein usually connects with the other large superficial vein of the upper extremity, the cephalic vein, via the median cubital vein (or median basilic vein).The internal jugular vein is formed by the anastomosis of blood from the sigmoid sinus of the dura mater and the common facial vein.

The internal jugular runs with the common carotid artery and vagus nerve inside the carotid sheath.

It provides venous drainage for the contents of the skull.Superficial dorsal vein.

The superficial dorsal vein of the penis drains the prepuce and skin of the penis, and, running backward in the subcutaneous tissue, inclines to the right or left, and opens into the corresponding superficial external pudendal vein, a tributary of the great saphenous vein.Blood from the dorsal venous arch passes into three major veins in the leg: the small saphenous, great saphenous, and anterior tibial veins.

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The great saphenous vein ascends through the leg and thigh on the medial side, collecting blood from tissues in these regions.Great Saphenous Vein.

The great saphenous vein is the major superficial vein of the medial leg and thigh.

It is the longest vein in the human body, extending from the top of the foot to the upper thigh and groin.The ulnar artery is the main blood vessel, with oxygenated blood, of the medial aspect of the forearm.

It arises from the brachial artery and terminates in the superficial palmar arch, which joins with the superficial branch of the radial artery.

It is palpable on the anterior and medial aspect of the wrist.The most frequent variations of the veins of the forearm.

In human anatomy, the cephalic vein is a superficial vein in the arm.

It communicates with the basilic vein via the median cubital vein at the elbow and is located in the superficial fascia along the anterolateral surface of the biceps brachii muscle.

What are the 3 major veins?

  • internal iliac artery. Branch of the common iliac artery flowing to the pelvis, the genital organs and the inner thigh.
  • superior vena cava.
  • great saphenous vein.
  • femoral vein.
  • basilic vein.
  • cephalic vein.
  • axillary vein.
  • subclavian vein.

What is the main vein?

The superior vena cava carries blood from the arms and head to the right atrium of the heart, while the inferior vena cava carries blood from the legs and abdomen to the heart. The portal venous system is a series of veins or venules that directly connect two capillary beds.

What is the name of the largest vein entering the heart?

venae cavae

Where are the main veins in your body?

Arteries (in red) are the blood vessels that deliver blood to the body. Veins (in blue) are the blood vessels that return blood to the heart. Deep veins, located in the center of the leg near the leg bones, are enclosed by muscle. The iliac, femoral, popliteal and tibial (calf) veins are the deep veins in the legs.

What are the 3 main veins to draw blood?

Median cubital vein A superficial vein, most commonly used for venipuncture, it lies over the cubital fossa and serves as an anastomosis between the cephalic and basilic veins. 2. Cephalic vein Shown in both forearm and arm, it can be followed proximally where it empties into the axillary vein.

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What are the major veins of the heart?

Key Takeaways

  1. Five great vessels enter and leave the heart: the superior and inferior vena cava, the pulmonary artery, the pulmonary vein, and the aorta.
  2. The superior vena cava and inferior vena cava are veins that return deoxygenated blood from circulation in the body and empty it into the right atrium.

What are the two main veins of the body?

Oxygen-poor blood returns from the body to the heart through the superior vena cava (SVC) and inferior vena cava (IVC), the two main veins that bring blood back to the heart. The oxygen-poor blood enters the right atrium (RA), or the right upper chamber of the heart.

Which leg is your main artery in?

The femoral artery is a large artery in the thigh and the main arterial supply to the thigh and leg.

How do you hit a vein?

Before you inject medication into a vein, have the patient squeeze a stress ball or rapidly open and close their hand to make the vein easier to see. Clean the area with rubbing alcohol and wrap a tourniquet around the arm, then carefully insert the tip of the needle into the vein at a 45° angle.

What is the easiest vein to shoot up in?

To shoot dope, you need to find a vein. The best place to look for veins is the crook of the arm. These are called the cubital fossa, to be technical. The veins found here are close to the skin’s surface and therefore, easy to spot given their large size and distinctive, bluish color.

How do you know if you hit an artery instead of a vein?

Don’t look for veins deep down because they can be found right on top. If the needle hurts when you inject, you may have hit an artery or nerve. If you feel any pain, (like stinging) pull the needle out right away. Apply pressure to the spot and hold your arm or leg over your head.

What happens when you miss a vein?

When you miss the vein, you lose the shot. But that’s not the only problem. A missed shot can get infected and cause an abscess at the site. Using a tourniquet or a tie can really help it– it stops your vein rolling and makes it bulge a little so it is easier to find.

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What is the longest vein in the body?

Great Saphenous Vein

What are the symptoms of a blocked artery in your leg?


  • Painful cramping in one or both of your hips, thighs or calf muscles after certain activities, such as walking or climbing stairs (claudication)
  • Leg numbness or weakness.
  • Coldness in your lower leg or foot, especially when compared with the other side.
  • Sores on your toes, feet or legs that won’t heal.

Which is the smallest vein in human body?

The smallest veins in the body are called venules. They receive blood from the arteries via the arterioles and capillaries. The venules branch into larger veins which eventually carry the blood to the largest veins in the body, the vena cava.

What is considered the most suitable vein for taking blood?

The most commonly used site for a venipuncture is at the bend of the elbow, also called the antecubital fossa. The median cubital vein, a superficial vein that forms a connection point between the cephalic and basilic veins of the arm is large, and therefore easier to see and feel.

What does a vein feel like upon palpation?

Keep your finger in contact with the skin so that you may feel the “bounce back” of a resilient, healthy vein. When determining a vein suitable for venipuncture, the skilled phlebotomist relies more on touch or feel than on sight. If you feel a pulse, you were palpating an artery.

Which vein should be avoided for venipuncture?

For adult patients, the most common and first choice is the median cubital vein in the antecubital fossa. Commonly referred to as the antecubital or the AC it can be found in the crevice of the elbow between the median cephalic and the median basilic vein.

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