can you explain the fetal pig circulatory system?
341241
isn't that the same question that you just asked?
303652
All right, I'm first going to explain, briefly, the structure of the cardiovascular system, and then I'll move on to how the blood transports oxygen specifically.\n\nYour heart pumps blood from the right ventricle to your lungs, where it exchanges carbon dioxide for oxygen, and then continues to your left atria. The left atria pumps the blood to the left ventricle, which pumps blood through your arteries  to your capillaries, where the oxygen is released so that cells can use it. Carbon dioxide is picked up, and the blood continues to the veins, and back to the right atria.\n\nNow, your blood contains red blood cells, which contain two important molecules, hemoglobin and myoglobin. Both have a high affinity for oxygen, so, in your lungs, where there is a high oxygen concentration, oxygen binds to each of these two molecules (until the equilibrium point is reached). The red blood cells are pumped throughout the body. \n\nIn the body, the concentration of oxygen is lower than in the surrounding atmosphere, so the amount of hemoglobin (and myoglobin) which is binding oxygen decreases until it reaches the new equilibrium point. Active tissues use oxygen quickly, forming lots of CO2, which enters the blood, and is converted to carbonic acid by red blood cells, using the enzyme carbonic anhydrase. The change in pH lowers the affinity of hemoglobin for oxygen, so more oxygen is released from other red blood cells near working tissues. The carbonic acid is released back into the blood from red blood cells, where it dissociates into a proton (H+) and a bicarbonate ion. It travels through the blood back to the lungs, where it is converted back into CO2, and diffuses across the transport surfaces of the lungs due to the concentration gradient. Then the cycle starts over.
395359
oxygen molecule in lungs diffuses into the blood stream return to the heart via the pulmonary vein (the only vein to carry oxygenated blood) into the left atrium, left ventricle, through the aortic semilunar valve, through the ascending aorta, arch of the aorta, descending aorta, common illiac artery, external illiac artery, femoral artery... from there it  depends where in the hind leg... by the way these are human names, I don't know how many would be different for animals... my comparative anatomy teacher used to make us do these kinds of questions all the time ;-)
827641
Locusts do not have separate, closed circulatory systems comparable to mammals. They have an open system, basically the entire internal portion of their exoskeleton is filled with a fluid (hemolymph) that transports immune cells, nutrients, amino acids, waste products, hormones, etc. There is an organ loosely corresponding to the heart that keeps the fluid moving but there are no veins or arteries or lymph glands or lymph vessels.
1097141
THe heart is made up of two pumps; one that contains oxygenated blood, and one that contains deoxygenated blood...they are divided by this thick wall called a septum...each half is made up of a ventricle and an atrium...that question was on my science quiz today!!!
898823
I've never heard of a foetus.  What is that exactly?  You're quite the genius.
381792
As you might already know that the heart has 2 ventricles- the right ventricle and the left ventricle.\n\nRight ventricle:\nReceives deoxygenated blood (without O2) from right atrium (from the body via Superior & Inferior Vena Cava), and pumps it into the lungs, where the blood may remove CO2 and retrieve O2 from the lungs- which isn't very far off.\n\nLeft ventricle:\nReceives oxygenated blood (with O2) from left atrium (from lungs) and pumps it into the system, i.e. the body. \n\nIn order to reach all parts of body (extremities included), the left ventricle has to work extra hard to maintain pressure and achieve this. That means, it also needs the capacity to handle such extra pressures, therefore, the left ventricle wall is thicker than the right one.\n\nThe ratio of right ventricle to left ventricle is 1:3, meaning, the left ventricle walls are 3 times thicker than the wall of right ventricle.
450165
humans (mammals) have 4 chambered hearts and frogs (amphibians) have three chambered hearts.\nin humans, half the heart sends oxygen poor blood to the lungs and the other half sends oxygen rich blood to the body. each half has its own atrium that collects blood, and ventricle that pumps it.\nin frogs, there are seperate atriums but 1 ventricle that pumps both at the same time, so the low oxygen and high oxygen blood mix a little bit.
413091
Frogs have a THREE chambered heart, not two. Oxygen poor blood flows from right atrium to the ventricle where it is pumped to the lungs and skin to pick up oxygen. Next the blood flows back to the heart, collecting in the left atrium. It them flows to the ventricle and is pumped to the body, dropping off the oxygen. This oxugen poor blood flows back onto the right atrium and it begins again.\n\nThis process is simular in humans except we have two ventricles, and do not breath through or skin as much so the right ventricle pumps to lungs only.
43591
My very scientific answer would be that pig, cow and eye each have 3 letters.  \nB pIg cOw LOG eYe\n:-)
241545
cardiovasular system, pumps the blood for circulation.
88278
A heart is a pumping station, circulating blood is its main function. The idea is to utilize its throbs,synchronise God's name within. The constant repetition of God's name produces God's light. The heart,being a pumping station circulates the Light-oriented blood all over the body. As a result of thisnot only does the heart get enlightened but also the whole body.
825900
Both mother and fetus share a common blood supply. In particular, the fetus's blood supply is delivered via the umbilical vein from the placenta, which is anchored to the wall of the mother's uterus. As blood courses through the mother, oxygen is delivered to capillary beds for gas exchange, and by the time blood reaches the capillaries of the placenta, its oxygen saturation has decreased considerably. In order to recover enough oxygen to sustain itself, the fetus must be able to bind oxygen with a greater affinity than the mother.\n\nFetal hemoglobin's affinity for oxygen is substantially greater than that of adult hemoglobin. Notably, the P50 value for fetal hemoglobin (i.e., the partial pressure of oxygen at which the protein is 50% saturated; lower values indicate greater affinity) is roughly 19 mmHg, whereas adult hemoglobin has a value of approximately 26.8 mmHg. As a result, the so-called "oxygen saturation curve", which plots percent saturation vs. pO2, is left-shifted for fetal hemoglobin in comparison to the same curve in adult hemoglobin.\n\nThis greater affininty for oxygen is explained by fetal hemoglobin's interaction with 2,3-bisphosphoglycerate (2,3-BPG). In adult red blood cells, this substance decreases the affinity of hemoglobin for oxygen. It is also present in fetal red blood cells, but does not interact with fetal hemoglobin, leaving its affinity for oxygen unchanged. Adult hemoglobin alone actually has a higher affinity for oxygen than its fetal equivalent, but the levels of 2,3-BPG reduce it.
323311
No, but it's not impossible- A widely held, but incorrect, belief is that the fetus must implant in the uterus.  The uterus is an excellent place for implantation, but the fetus drives formation of the placenta/umbilical cord, which can form on any vascularized tissue. This is the case in ectopic pregnancies-they are dangerous, but possible. It has been shown in male dogs that a fetal puppy can implant and grow on the external wall of the intestine, and develop-but the experiment was not taken to term.  There has never been an experiment reported in which a fetus was implanted in a man.  Theoretically it would be possible to grow a fetus in a man to the point that the fetus could be removed and kept alive ex vivo.  It would be dangerous for the man because of the massive growth in vascularization on any tissue the fetus implants, and the chance for bleeding, and since the man doesnt have the same hormones the fetal brain would likely develop significantly differently, but the end answer is that there is no physiological reason it is not possible.  I doubt, however, that it could be taken to term without serious danger to the man.
38329
The first answer was good, although mostly copy$paste \nhttp://www.nda.ox.ac.uk/wfsa/html/u05/u05_010.htm\n\nThe circulatory system is regulated both by the autonomic nervous system (with two antagonistic systems that may increase peripheral circulation or visceral circulation, slow/accelerate heart rate, etc) and by the endocrine system. Hormones have slower, but more long-term effects than nervous "orders" but both are necessary.
40007
Becuase pig organs have a neutral blood type and are the right size and shape to fit the human body.
771570
You got me going over this, so I've been all over the world looking for an answer\n\nWhat is behind my belly button?\n\nAccording to the punch line of an old joke: "If you unscrew your belly button, your bottom falls off." In reality, the umbilical vein comes from the afterbirth or placenta, which carries blood enriched with oxygen and nutrients to the developing baby.\n\nThe umbilical vein runs from the navel to the fetal liver and through a bypass vessel (the ducted venosus) to the fetal heart. After birth, the umbilical vein remains open for a time, but soon afterwards it closes and shrivels up to become a fibrous cord. It crosses the abdominal cavity in a fold of the abdominal wall lining forming the round ligament (the ligamentum teres). Sometimes things don't close as they should and an umbilical hernia develops.\n\nmeaning\n\nOur belly button does not heal over because there is nothing between it and our stomach except a few thin layers of skin