0
Veins
Veins are thin blood vessels that carry blood from various body parts to the heart. These have valves in them to prevent back flow of blood.
2,123 Questions
Are the walls of the veins thinner than those of the arteries?
No. Its the other way round.
Walls of lymphatics (lymph vessels) are thinner than that of veins.
Wall of lymph vessels consists only of a single layer of flat endothelial cells(with a few extensions into the lumen, as valves),
while that of veins consists of innermost layer- of endothelial cells (tunica intima), middle layer-of smooth muscle cells (tunica media) and an outer layer- of connective tissue(tunica externa)
How can you avoid inadvertently puncturing an artery?
When drawing blood from an artery, there are two indicators that the artery has been punctured. When using a butterfly, the flash of blood that appears in the tubing will be pulsing. Also, arterial punctures produce very bright red blood.
Veins can collapse if too much negative pressure is used when withdrawing blood as the walls are rather thin.
The jugular veins are blood vessels which carry deoxygenated blood from the brain back toward the heart. The jugular veins are divided into external and internal sets.
A vein in a rock is some other material than the surrounding rock.
What is the difference between the artery's shape and vein's shape?
Mean pulmonary vein diameters at the ostia were variable: right superior, 11.4-12.4 mm; left superior, 9.6-10.5 mm; right inferior, 12.3-13.1 mm; and left inferior, 9.0-9.9 mm. Diameter and cross-sectional area of the left superior pulmonary vein were significantly larger in men than in women (P < .005). As expected, the caliber of three of the four veins gradually increased as they approached the left atrium. Caliber of the left inferior pulmonary veindecreased as it entered the left atrium. None of the veins were round; all were ovoid. Left-sided veins andvenous ostia were less round than right-sided veins (P < .001). CONCLUSION: Pulmonary veindiameter, cross-sectional area, and shape vary. Particular care must be taken when the left inferior pulmonary vein is evaluated for stenosis, as it normally narrows as it enters the left atrium.
Pedi
Where can one find more information on laser varicose vein removal?
Vericose vein surgery is considered a cosmetic surgery. Therefore, popular cosmetic surgery websites will be useful. Consulting your GP on any considered surgery is advised and they may be able to talk you through the procedure.
Vein that drains the ovaries or testes?
In either case there is a bed of veins called the pampiniform plexus which directly drain the organs blood supply. The plexus then drains into discreet veins; from the ovaries, the ovarian veins and from the testes, the testicular veins. These discreet veins connect directly to the inferior vena cava.
What is the only vein in the body that carries oxygen-poor blood?
Mostly, but not entirely. Oxygenated blood leaves the lungs and enters the heart via the pulmonary veins.
Why do veins pop out your arm?
Your veins pop out for many reasons
1. You may be slightly muscular therefore the muscules push the veins up and out
2. Like me your veins may be close to your bone so when you move the bone they pop out
3. There isn't enough blood flow going through them
Hope this helps XD
go to doctor. that aint normal qurl.
What causes abnormally swollen veins in legs?
They are called varicose veins and they are a result of faulty valves in the veins that allow blood to pool or flow back instead of going forward and the vein then bulges.
Do veins return deoxygenated blood to the heart?
In general, yes. However, the exception is the pulmonary vein which transports oxygenated blood from the lungs to the hearts. In reverse, the pulmonary artery transports de-oxygenated blood to the lungs.
What carries blood between the heart and body?
The heart pumps it around the body through arteries and it the blood returns to the heart via the veins.
Which system helps produce voluntary movement circulate blood and move food?
The various types of muscles which belong to the muscular system.
Where Blood enters the heart through veins into the what?
Ffrom systemic circulation blood from vains is collected in the vena cava and deposited into the right atrium. From the pulmonary circulation the blood is collected into the pulmonary vein which deposits it into the left atrium. Therefore blood from veins are deposited into the atria.
Why are valves present in veins but now in arteries?
valves are only present in veins to stop the blood to move backwards through the vein but in arteries the muscle puts alot of pressure on the blood which stops it from moving in the wrong direction
What vein drains venous blood from the myocardium into the coronary sinus?
The heart pumps oxygenated blood only, all deoxygenated blood goes through veins so i think you are thinking about the aorta, which is the most important artery. And the myocardium is just the second layer of the heart, it isn't a part per se.
Is a knot of varicose veins in one side of the scrotum?
A varicocele is a knot of varicose veins on the side of the scrotum. This condition is usually not a problem, but some men may have it repaired due to discomfort or low sperm count.
