If a baby was born with a hole in the septum, how would this affect the oxygen of the blood out of the heart?
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A hole in the septem means that there is a passage between the ventricles on both sides of the heart. This means that oxygenated and deoxygenated blood can mix. Therefore, some of the blood that leaves the heart may actually be deoxygenated.\n\nIn small quantanties, which is usually the case unless it is an extreme case, the mixing of the two does not generally cause a problem. If the problem is severe, then surgery can resolve this problem.\n\nI have this problem myself, and have seen this first hand on a colour-scan!\n\nTom Walvin\nBiologist
136322
The cardiovascular system is a closed system, meaning that blood remains inside the vessels no matter how small they are.  The process of diffusion drives oxygen, carbon dioxide, wastes and nutrients between the tissues and the blood inside the blood vessels-blood just goes around the body.  Humans have a 4-chambered heart: 2 ventricles and 2 atria (sing: atrium).  The atria receive blood and the ventricles "expel" the blood (pumps the blood away from the heart).  You can partition the heart into two sides (left and right), each with its own ventricle and atrium.   One side is for the systemic circulation (to the body) and the other is for the pulmonary circulation (to the lungs).  Blood (deoxygenated) from the body collects in the right atrium, which passes the blood to the right ventricle, which relays the blood to the pulmonary arteries (arteries to the lungs) to get oxygen and expel carbon dioxide.  Once the blood in the lungs acquires oxygen, it passes to the pulmonary veins and into the left atrium.  Then, the blood goes into the left ventricle and is pumped into the aorta (think of it as the largest artery in the body or like in the water supply, the main tube of water where all of the other tubes originate). From the aorta it goes to the arteries and then to the arterioles and the capillary networks (where gas exchange occurs).  After being depleted of oxygen, it goes to the venules to the veins then to the vena cavae and back into the right atrium and it goes around again. :-)
829141
Higher partial pressure of O2 in atmosphere that that present in the blood.\n\nRemember, blood in the lungs will be DEOXYGENATED!
619312
it goes into your lungs and then straight into your blood stream from there.  how do you think oxygen gets in your blood??
704243
I think yes, it would lower PO2 at rest (and exercise too). This case  would be similar to pulmonary interstitial edema. This persons develop tachypnea which is consequence of low PO2, and little elevated PCO2. All of this is because of decreased diffusion through alveolar membrane.....I think...\n(imagine) If this change happened during evolution, there's no way to tell how high would PO2 be. It could be even higher due to other evolution changes, which could provide us more effective way of utilizing O2.
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I don't know as for pigs specifically but the circulatory systems of most mammals should be broadly similar - there will merely be small differences in the structure of the haemoglobin between individual species. The main differences between foetal and normal circulatory systems have to do with the placental route, as the position of the components of the vascular system will be the same as postnatal. The placenta is the organ which allows oxygen from the mother's blood to pass through into the foetal blood, and waste products such as CO2 to pass from the foetal blood back into the mother's blood. It has a good blood supply and is attached to the uterine wall. It will come out as afterbirth at the end of labour. \n\nSo, when the mother's blood flows into the placenta it is oxygenated. The maternal and foetal blood does not mix but comes into contact on either side of a thin membrane which is oxygen permeable. The only way that the foetus is able to grab the oxygen from the maternal blood is because it has a special kind of haemolglobin, foetal haemoglobin (HbF) with a higher affinity for oxygen than adult haemoglobin (you might see some oxygen dissociation curves on this - the normal line should be shifted to the left). It also has a lower affinity for CO2. Therefore the HgF is able to 'grab' oxygen and release CO2 to the maternal HgA (adult).\n\nOnce the HgF has become oxygenated in the placenta it travels through the umbilical cord (which has two separate blood vessels, one from foetus to placenta, and one from placenta to foetus) and into the foetal blood stream. The main difference once inside the foetus itself is that when the blood travels through the heart it goes through a hole between the right atrium and left atrium called the foramen ovale and (mostly) does not pass through the ventricles. This hole mostly closes up just before birth (ie in the last few weeks of pregnancy) but in some babies this process is incomplete, leading hole-in-the-heart syndrome. This hole only occurs because the greater pressure caused by pumping through the ventricles is not needed in the smaller body of the foetus. Apart from that, the rest of the foetal circulatory system is pretty much the same as the adult, just smaller (obviously).\n\nAfter birth, the gene coding for HgF will be switched off and the instead HgA will be produced, allowing for the new demands of respirating autonomously.\n\nI did a quick search to see if there was a useful website to help you. I cite this below. It has some nice diagrams.
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blood being living cells would die and rot...you dont breath when youre dead, so they arent collecting any oxygen, yes like that other person, it will coagulate.  Also your heart isnt pumping so it will not be able to move through the vessels without this pressure, so it will clot...it isnt common for it to build up in the vessels, but the amount of time it was out will determine what happens...it is one of the factors that help crime investigators tell how long something has been dead..CSI/Law&Order-esque
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carries oxygen around the body
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Sometimes it can be left.\nOther times it can cause infection or later pain.\nAlso sometimes it has invaded an artery it can travel to the heart or other area of the body and create all kinds of problems.
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Er, could you please clarify first.  And no heartbeat could be caused by many things, and therefore there are many terms used.  Obviously if the fetus is stillborn, theren't not gonna notice any other deffects right away but they sometimes do autopsies to find the cause.
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My daughter has a few birth defects, she was born with long-gap esophageal atresia and a hypoplastic left lung.  I'll tell you more later.  I need to go for now!
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Foramen Ovale\n\nThe foramen ovale remains open during fetal development to allow blood from the venous system to bypass the lungs and go to the systemic circulation. This is because prior to birth, the oxygenation of the blood is via the placenta and not the lungs. A layer of tissue begins to cover the foramen ovale during fetal development, and will close it completely soon after birth. After birth, the pressure in the pulmonary circulation drops, and the foramen ovale closes. In approximately 30% of adults the foramen ovale does not seal over.
782029
The right side of the heart is for pulmonary circulation. this is to take blood from the tissues rich in co2 and lower in Oxygen and circulate it thru the lungs. In the lungs the co2 is dumped off and a fresh load of oxygen is picked up by the hemoglobin in the red blood cell. The left side of the heart now gets this fresh blood and the left ventricle pumps blood thru the body but not the lungs. the right ventricle pumps blood thru the lungs.
390085
Two veins which carry oxygenated blood from the mother to the baby and one artery which carries the deoxygenated blood away from the baby.  In between these vessels is Wharton's jelly which keeps the vessels from collapsing
570523
Unoxygenated Blood goes from the heart to the lungs and becomes oxygenated.  It then goes back to the heart before being pumped out through the arteries and arterioles to all the parts of the body.  At this point nutrients and oxygen mix with the cells of the body and exchange oxygen for carbon dioxide.  It then goes back to the heart to begin the process over again.
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The pulmonary arteries carry blood from the heart to the lungs. They are the only arteries (other than umbilical arteries in the fetus) that carry deoxygenated blood.\n\nThe coronary circulation consists of the blood vessels that supply blood to, and remove blood from, the heart. The vessels that supply blood high in oxygen to the heart are known as coronary arteries. \n\nI'm providing you with a link so that you can read more about it if you like.  The link also has a helpful diagram of the heart that may interest you.
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Ill try-\nBlood comes into the right atrium, then to the right ventricle..it stays on the right side at first.  This blood doesnt have any oxygen in it, so the first thing you have to do is get it oxygenated-So, the blood goes from the right ventricle to the lungs.  Here, the blood picks up oxygen for the rest of the body, but it still has to be pumped to the rest of the body.  So the blood goes fro mthe lungs back to the heart, but this time it goes into the left atrium, then the left ventricle-from there is goes everwhere in the body, delivering oxygen.  Now, once the body has taken all the oxygen out, the blood goes back to the right atrium, for the whole cycle to start again.\nhere's the overall flow:\n\nBlood from the body without oxygen--->\nright Atrium--->Right Ventricle--->\nLungs, so it can get oxygen--->\nLeft Atrium--->Left Ventricle--->\nRest of the body, to deliver oxygen---->\nBack to the right atrium once the oxygen is used.