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Why are the arteries and veins connected by the capillaries? If veins carry de-oxygenated blood and arteries carry oxygenated blood, why are they connected?
Veins and arteries are just nomenclature:one carries oxygenated blood the other de-oxygenated to various end points of the body. You need a return path to the heart/lung system: this is...
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Is the correct order of blood flow capillaries, arteries, arterioles, veins, venules;
arterioles, arteries, capillaries, veins, venules; veins, venules, capillaries, arterioles, arteries; or arteries, arterioles, capillaries, venules, veins?
The Aorta is the main highway that receives blood from the heart. It splits into Arteries, these split into smaller arterioles, then even smaller capillaries . After the Erythrocytes...
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What does an vein have that and artery doesn't, and why is it so important?
Veins posseses Valves which prevent the backflow of blood in the veins , Artery lacks valves. Blood flows with high pressure in the arteries hence they do not require presence...
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Do veins, arteries, venules, or pulmonary arteries carry blood away from the heart?
All the artery carry blood away from heart while all veins carry blood towards heart. All the artery carry oxygenated blood except Pulmonary artery and All veins carry deoxygenated blood...
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Do the veins of the systemic circuit carry oxygenated or deoxygenated blood? Do the veins of the pulmonary circuit carry oxygenated or deoxygenated blood?
The veins in the systemic circuit carry Deoxygenated blood but the veins in the pulmonary circuit carry Oxygenated blood. Read this for more.
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How do blood sinuses differ from veins?
Histologically blood sinuses do not have epithelial walls. These are simple spaces in tissue. The best example is sinusoids in liver lobule. These are spaces filled with blood. On...
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What is the difference between a hepatic vein and a hepatic portal vein?
Hepatic portal vein carries blood and nutrients from the stomach, spleen, intestines and gall bladder to the liver. The hepatic vein carries deoxygenated blood from the liver back to the...
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Does the pulmonary circuit involve the hepatic portal vein?
Hepatic portal vein collects blood from pelvic region in amphibians and lizard like animals. In birds and mammals there is no hepatic portal. Presence of hepatic portal is having evolutionary...
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Why is the hepatic portal vein a vein?
Vein is any blood vessel which takes impure blood towards heart ( except Pulmonary vein ). The lower abdominal veins from stomach , pancreas etc unite and form the Hepatic...
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What is the highest dextrose concentration solution that may be administered through a peripheral vein? Why can't solutions with higher concentration of dextrose be given through a peripheral vein?
This is the maximum osmolarity that the peripheral veins can tolerate. Glucose solutions of greater concentration should be administered through a large central vein such as a subclavian vein to...
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