What path does blood take to get throught the entire body?
467229
In the human body, the heart is normally situated slightly to the left of the middle of the thorax, underneath the sternum (breastbone). It is enclosed by a sac known as the pericardium and is surrounded by the lungs. The apex is the blunt point at the base of the heart. A stethoscope can be placed directly over the apex and count the beats. In normal adults, its mass is 250-350 g, but extremely diseased hearts can be up to 1000 g in mass. It consists of four chambers, the two upper atria (singular: atrium) and the two lower ventricles.\n\nA septum divides the right atrium and ventricle from the left atrium and ventricle, preventing blood from passing between them. Valves between the atria and ventricles (atrioventricular valves) maintain coordinated unidirectional flow of blood from the atria to the ventricles.The ventricular systole consists of the contraction of the ventricles and flow of blood into the circulatory system. Again, once all the blood empties from the ventricles, the pulmonary and aortic semilunar valves close. Finally complete cardiac diastole involves relaxation of the atria and ventricles in preparation for refilling with circulating blood.\n\nThe function of the right side of the heart (see right heart) is to collect deoxygenated blood from the body and pump it into the lungs so that carbon dioxide can be dropped off and oxygen picked up. This happens through a process called diffusion. The left side (see left heart) collects oxygenated blood from the lungs and pumps it out to the body. On both sides, the lower ventricles are thicker than the upper atria.\n\nOxygen-depleted or deoxygenated blood from the body enters the right atrium through two great veins, the superior vena cava which drains the upper part of the body and the inferior vena cava that drains the lower part. The blood then passes through the tricuspid valve to the right ventricle. The right ventricle pumps the deoxygenated blood to the lungs, through the pulmonary artery. In the lungs gaseous exchange takes places and the blood releases carbon dioxide into the lung cavity and picks up oxygen. The oxygenated blood then flows through pulmonary veins to the left atrium. From the left atrium this newly oxygenated blood passes through the mitral valve (also called the bicuspid valve) to enter the left ventricle. The left ventricle then pumps the blood through the aorta to the entire body. Even the lungs take some of the blood supply from the aorta via bronchial arteries.\n\nThe left ventricle is much more muscular (1.3 - 1.5 cm thick) than the right (0.3 - 0.5 cm thick) as it has to pump blood around the entire body, which involves exerting a considerable force to overcome the vascular pressure. As the right ventricle needs to pump blood only to the lungs, it requires less muscle.\n\nEven though the ventricles lie below the atria, the two vessels through which the blood exits the heart (the pulmonary artery and the aorta) leave the heart at its top side.\n\nThe contractile nature of the heart is due to the presence of cardiac muscle in its wall which can work continuously without fatigue. The heart wall is made of three distinct layers. The first is the outer epicardium which is composed of a layer of flattened epithelial cells and connective tissue. Beneath this is a much thicker myocardium made up of cardiac muscle. The endocardium is a further layer of flattened epithelial cells and connective tissue which lines the chambers of the heart.\n\nThe blood supply to the heart itself is supplied by the left and right coronary arteries, which branch off from the aorta.
356130
im studying the digestive system right now, so i'll have a go at this question (u may want to chec accuracy).\nthe cell gets the carbon it needs via the blood supply. when we eat, all the nutrients are broken down and molecules such as hydrogen, oxygen and carbon are filtered into the blood stream so that they can be passed on to all the cells in th body.\n\ndoes that help?
1044130
It has to do with the fact that the blood coming from veins in order to get to the heart, it has to fight gravity; this is done with the help of valves –i.e. the leg valves http://sln.fi.edu/biosci/vessels/veins.html  .Therefore, the blood coming from them [veins] do not flow as easy as the one coming from the arteries –which flows out from the aorta to the rest of the body with the full force provided by the strong pumping action of the heart. That’s why there is no need to use a vacuum for arterial blood collection.
475696
blood doesn't need gravity to flow through your body.  The heart pumps it and the veins and arteries have valves which keep it going in the correct direction (ie no back flow).
233549
the "major artery" would be the AORTA (main artery delivering blood to body)... the "major vein" would be the SUPERIOR & INFERIOR VENA CAVA (main veins bringing blood back from body)  [the heart to lung circulation is the pulmonary artery & vein]
343407
All of the liquids in the body go into the bloodstream. While there, they flow through the kidneys. These filter out all of the things that shouldn't be in the blood, and the wastes go through the ureters into the bladder. The bladder collects it until it is more than half full. Then it sends a signal to the brain that tells you you need to go to the bathroom where the pee comes out through the urethra.
339926
draw a diagram of the system and where the blood goes when it goes in the heart etc. like show how it first goes into the right atrium than right ventricle than pulminary arteries then to the lungs to get oxygen then it travels back into the heart using the pulminary veins then its inside the left atrium then it goes through a valve into the left ventricle than to the aorta than to the rest of the body
579619
Oxygen bind to hemoglobin which is part of the red blood cells.  It is picked up in the lungs where there are little sacs that have a very thin lining of cells.  Therefore the air you breathe in will be able to reach the blood.  Then the hemoglobin will carry blood to the parts of the body.
283577
Arteries pump blood away from the heart and toward the arms and legs.  Most clots are in the veins, which can break off and move to the heart and then to the lungs.
211555
Arteries\n\nThere are two major kinds of blood vessels, veins and arteries. arteries run from the heart to all the other body parts, and the heart pumps fresh blood into the arteries. All the cells in the body draw nourishment and oxygen from this blood and leave out waste and carbon dioxide. The veins then carry this impure blood back to the heart. The blood that goes to the lungs brings back extra oxygen and the liver and the small intestine play a major role in introducing nourishment into the blood stream
249298
All arteries carry oxygenated blood and all veins carry unoxygenated blood except for in the pulmonary circuit, where the pulmonary arteries carry unoxygenated blood from the heart to the lungs, and the pulmonary veins carry oxygenated blood from the lungs back to the heart.
1057994
this may not be the answer you are looking for... but here it is anyway...\n\nthe respiratory system involves providing oxygen for the body. You inhale air which is made of different gases and your lungs absorb oxygen out of the air and you exhale the stuff that isn't absorbed. Oxygen is needed for burning fuel. Every single cell (trillions of them) need this oxygen you just inhaled. How does it get to every single blood vessel? you guessed it! the Circulatory system \n\n... the oxygen rich blood goes to the heart. .. and with every beat gets pumped out in all different directions all over the place and then once the oxygen has been delivered, the spent blood comes back for a refill... this happens many many times per minute. \n\nnow, all this blood would go nowhere without a heart. What is a heart essentially? a big strong muscle that goes and goes and goes for 80 years or more without ever stopping! in addition to this, every move you make, helps blood flow. especially walking, your feet act like mini pumps cuz you step on one foot the blood gets pushed around and then you step on the otehr foot as you walk and it goes on. \n\nAnd of course the nervous system. This has instructions directly form mission control ... your brain. It controls your heart speed, breathing speed, blood flow to different parts of the body depending on which part needs how much at what time and everything. None of these systems could normally work without the other one ... but if your nervous system goes down, your pretty much a vegetable. \n\nI know I just explained what all these different systems do but hopefully it helps you understand better.
718855
I think that it goes along the same lines as the reason we get stomach craps during exercise. The majority of blood is directed to the muscles, not the internal organs. Digestion stops during exercise because the majority of blood is directed to the muscles; I am sure that the same goes for the kidneys. Also this happens when the sympathetic nervous system is activated.
761625
The red blood cells have a special oxygen transport molecule called hemoglobin. It has an iron atom in the middle of it that binds to the oxygen very loosely in the lungs where oxygen is plentiful. Then, when the red blood cell reaches tissue that has a low oxygen concentration, the loosely bound oxygen dissociates from the hemoglobin, ready to be used by the cells in the body.\n\nThe right side of the heart pumps blood to the lungs where the oxygen is picked up. Then the blood goes back to the left side of the heart to be pumped out to the rest of the body so the oxygen can be delivered.
537443
Circulatory is just like a train or subway. It carries all the blood lightening fast through the body, then back to the station at the heart.
338311
The lungs (respiratory system) take in air (using the oxygen and breathing out the carbon dioxide), the heart pumps the oxygen through our arteries (circulatory system)making our blood red.
726176
Blood travels at different speeds in all different types of vessels.  Fastest in arteries, slower in arterioles, VERY slow in capillaries, then faster in venules, and faster again in veins.\n\nfrom 425 cm/sec in the aorta to about less than 1 mm/min in capillaries is a decent range i think.