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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").
What else can I help you with?
What is the longest vein in the human body?
The great saphenous vein is the longest vein in the body. It is a superficial vein located in the leg.
Where is the Great Saphenous vein located?
it is located in your brain :p hahahhahahaha
What is the largest vain in the lower limb?
The most important veins in the lower leg are the two saphenous veins--the greater saphenous vein, which runs from the foot to the groin area, and the short saphenous vein, which runs from the ankle to the knee.
What is the largest vein in the human heart?
The great saphenous vein is a superficial vein that runs up the inside of the leg. It's the longest vein in the body.
Is the cephalic vein a deep vein?
No it is a Superficial vein
Is the basilic vein deep or superficial?
Superficial
What vein is near the body surface?
The vein that is typically closest to the body surface is the superficial vein. Superficial veins are located just beneath the skin and are commonly found in the arms and legs, such as the cephalic vein in the arm and the great saphenous vein in the leg. These veins are important for thermoregulation and can often be seen or palpated easily, especially in individuals with low body fat.
What superficial vein is on medial side of tibia?
The great saphenous vein is the superficial vein on the medial side of the tibia. It is the longest vein in the body.
Ulnar vein is a deep vein or superficial vein?
The ulnar vein is a deep vein.
What vessels drains blood from the lower leg?
The main vessels that drain blood from the lower leg are the popliteal vein, which originates behind the knee, and the tibial veins, which run alongside the tibia bone in the lower leg. These veins eventually merge into larger vessels and return blood to the heart.
Is the radial vein a superficial or deep vein?
The Brachial Vein is a deep vein in the arm.
Which vein is not an antecubital vein A the Femoral vein B the Internal Jugular Vein C the Inguinal vein?
The Superficial Vein is not an antecubital vein.
