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Why do arteries not break when blood enters under high pressure?
Wiki User
∙ 13y ago
The Bernoulli Principle which in a nutshell states says faster moving fluids have less pressure so as blood enters the arterie it speeds up reducing its pressure and when it leaves to a bigger blood vessel it slows down again and its presure increases. Also the arterie itself can expand slightly to accomodate higher pressures.
Wiki User
∙ 13y ago
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Blood moves from arteries into what?
After blood leaves the arteries, it enters smaller blood vessels called arterioles which help supply the body with blood and then they break down into even smaller vessels called capillaries which then carry the oxygenated blood to the tissues, organs and all cells of the body. Then after the body uses up all the oxygen, the blood becomes deoxygenated which then enters venules and then veins which lead up back to the vena cava of the heart. It then enters the right atrium then passes through the tricuspid valve and then enters the right ventricle, then leaves the heart via the pulmonary artery which enters the lungs to oxygenate the blood.
What is high blood presure?
High blood pressure or hypertension is a condition wherein the pressure in the arteries is higher than the normal rate. High blood pressure, if not prevented may lead you in the risk of having heart disease.
why hardening on the arteries bad?
Hardening of the arteries is bad as it decreases blood flow and limits the amount of oxygen in the body. It can lead to heart attacks and strokes when pieces of plaque break off and block the passages.
How do medicines that thin the blood help a person who is suffering from atherosclerosis?
Blood thinners will decrease your blood density so that fatty material clogging your arteries doesn't completely cut off your blood flow. However, blood thinners don't get rid of atherosclerosis, they only buy the patient more time for his or her body to break down the fats which are clogging the arteries.
What are three parts of the cardiovascular system?
-Capillaries bring blood and nutrients to every cell. They are smaller than your hair. -Veins bring non-oxygenated blood back to the heart, so that the blood can become reoxygenated. -Arteries take the blood straight from your heart. They are very flexible so that they will not break every time the heart pumps blood.
What supplies the kidney with blood?
your body has renal arteries which bring blood to your kidneys. those arteries then break up into a bunch of capillaries which then force the blood through the glomerolus which takes out mainly water, urea, ammonia, and salt from your blood. Then the filtrate (what the glomerolus removes) runs through the nephrons to filter the blood. and some things like water and a little salt are reabsorbed and carried away by your renal veins.
Where does food break down?
Food begins to break down as soon as it enters your mouth.
If an insect enters the ear can it break the ear drum?
No.
What has the author Ian Enters written?
Ian Enters has written: 'Outside this communion' 'Shadow' 'Build and Break'
Should I worry about clogged arteries?
Yes, as these can cause clots that can break off and block blood flow to the heart muscle (heart attack), lungs (pulmonary emboli) or the brain (stroke).
Where does the blood flow out of the heart?
Blood from heart is first pumped out by the left ventricle into the aorta artery which first carries it towards our head and then branches into three parts which further break into smaller arteries and supply blood to different body organs.
What are the different types of the blood tubes through which the blood passes?
We need to briefly discuss the anatomy of the vessels. There are three types of vessels - arteries, veins, and capillaries. Arteries, veins, and capillaries are not anatomically the same. They are not just tubes through which the blood flows. Both arteries and veins have layers of smooth muscle surrounding them. Arteries have a much thicker layer, and many more elastic fibers as well. The largest artery, the aorta leaving the heart, also has cardiac muscle fibers in its walls for the first few inches of its length immediately leaving the heart. Arteries have to expand to accept the blood being forced into them from the heart, and then squeeze this blood on to the veins when the heart relaxes. Arteries have the property of elasticity, meaning that they can expand to accept a volume of blood, then contract and squeeze back to their original size after the pressure is released. A good way to think of them is like a balloon. When you blow into the balloon, it inflates to hold the air. When you release the opening, the balloon squeezes the air back out. It is the elasticity of the arteries that maintains the pressure on the blood when the heart relaxes, and keeps it flowing forward. if the arteries did not have this property, your blood pressure would be more like 120/0, instead of the 120/80 that is more normal. Arteries branch into arterioles as they get smaller. Arterioles eventually become capillaries, which are very thin and branching. Capillaries are really more like a web than a branched tube. It is in the capillaries that the exchange between the blood and the cells of the body takes place. Here the blood gives up its carbon dioxide and takes on oxygen. In the special capillaries of the kidneys, the blood gives up many waste products in the formation of urine. Capillary beds are also the sites where white blood cells are able to leave the blood and defend the body against harmful invaders. Capillaries are so small that when you look at blood flowing through them under a microscope, the cells have to pass through in single file. As the capillaries begin to thicken and merge, they become venules. Venules eventually become veins and head back to the heart. Veins do not have as many elastic fibers as arteries. Veins do have valves, which keep the blood from pooling and flowing back to the legs under the influence of gravity. When these valves break down, as often happens in older or inactive people, the blood does flow back and pool in the legs. The result is varicose veins, which often appear as large purplish tubes in the lower legs.
