1123 HARD TO BELIEVE FACTS1123 HARD TO BELIEVE FACTS

21 Interesting facts about veins

veins_1Veins hold up to 70% of the entire blood and are very distensible. They can endure huge changes in volume, resulting from a haemorrhage or transfusion. Tweet This


veins_2Some veins can constrict in response to nerve stimulation.  Tweet This



veins_3Blood samples are normally taken from veins, having thinner walls, larger diameters and lower blood pressure compared to arteries. Tweet This



veins_4Larger veins possess one-way valves ensuring that blood travels in the correct direction and preventing the development of undue back pressure. Tweet This


YOU MAY ALSO CHECK OUT: 19 FACTS ABOUT THE HUMAN VEINS


veins_5Sometimes valves cease to function, causing veins to distend permanently, with blood flowing backwards and collecting in the vein. Tweet This


veins_6Swollen and enlarged veins are called varicose – usually blue or dark purple. In appearance, they may be twisted, lumpy or bulging. Tweet This


veins_7Varicose veins are usually due to weak vein walls and valves. In rare cases, causes may be: previous blood clot, swelling or tumour in the pelvis, abnormal blood vessels. Tweet This


veins_8Varicose veins’ symptoms include pains, dry skin and colour changes in the lower leg, heavy legs, swollen feet and ankles or muscle cramps. Tweet This


veins_9Varicose veins are a common condition, affecting up to 35% of adults. Tweet This


facts about veins 10The first recorded case of varicose veins dates back in 86 BC, when the Roman general Caius Marius described his suffering. Tweet This


1123 HARD TO BELIEVE FACTS1123 HARD TO BELIEVE FACTS


veins_11Giraffes have the greatest pressure in their legs amongst all animals. Yet, they never get varicose veins because of their extremely thick skin. Tweet This



12_fixedUp to 75% of men are affected by varicocoele, which is a vein enlargement that occurs in the left testicle and cause discomfort. Tweet This


veins_13Any vein can become varicose, but as standing and walking put extra pressure on the lower body, they most frequently develop in the calves. Tweet This


veins_14Trunk varicose veins are near the skin surface and are thick and knobbly; they are visible and often very long. Tweet This


veins_15Reticular varicose veins are red and are sometimes grouped together into a network. Tweet This


16_fixedTelangiectasia varicose veins, a.k.a. thread veins or spider veins are small clusters of blue or red veins that can appear on your face or legs. Tweet This


veins_17Women are more likely to be affected by varicose veins than men because female hormones tend to relax the walls and valves of veins. Tweet This


facts about veins 18Risk increases if a close family member has varicose veins. Tweet This


veins_19As you get older, your veins start to lose their elasticity and valves inside them become less efficient. Tweet This


veins_20Being overweight puts extra pressure on your veins and valves, as they have to work harder to send the blood back to your heart. Tweet This


veins_21The impact of body weight on the development of varicose veins is thought to be more significant in women. Tweet This

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