Does anyone know how many chambers are in a fish, amphibian, reptile or birds heart?
461727
Fish have 2 major chambers (one auricle and one ventricle, plus one sinus venosus - before the auricle - and a conus arteriosus - after the ventricle). However, in the lungfishes there is a partial separation of both the main chambers, linked to the existence of a pulmonary blood circuit. \nAmphibians have two auricles and one ventricle, and the latter has deep "pockets" where oxygenated and deoxygenated blood goes, so that these two blood volumes do not mix much  while each flows through its respective circuit.\nReptiles... well, there is no such thing as a "reptile" really but rather three different groups. Both the turtles and the squamates (lizards and snakes) have two auricles and one ventricle, and the latter is partially separated by a spiral septum so that the pulmonary and body circuit do not usually mix (except in special circumstances). \nCrocodiles are related to birds, and just like them, they have a four chambered heart, with two auricles and two ventricles. However, in crocs the oxygenated and deoxygenated blood can get mixed because they have a hole between the paired main blood vessels that leave the heart. \nBoth birds and mammals have also four-chambered hearts with completely separate pulmonary and body circuits. \nCheck the link, there are good schematic illustrations and explanations for each taxon.
535375
i think animalia contains all animals - fish, reptiles, mammals, birds and amphibians. dolphins are obviously not bacteria, fungi, insects, etc. if you meant mammalia it is because dolphins -\nbreathe air with lungs, not gills\nbreastfeed their young that do not hatch from eggs\nhave four chambered hearts
457241
Five small species of skinks (lizard-like creatures) with green blood found on Papua New Guinea are the only green-blooded land vertebrates in the world.\n\nProbably there are more sea animals or more primitive land animals as well.\n\nAnother curiosity is "blue blood" I remember from my childhood that octopuses have 3 hearts and blue blood
50614
Yes.\n\nA Yahoo search on:\n\nanatomy of a shrimp heart\n\nbrought up this Web site with a diagram:\n\nhttp://www.shrimpcrabsandcrayfish.co.uk/Shrimp.htm?Anatomy.htm~mainFrame
484195
for internal in external structures and drawings.\nhttp://www.biologymad.com/Kidneys/Kidneys.htm
1004465
the first 1 would be frogs and the 2nd one would be lizards.....simple!!\nP.S.:thanks for the 2 points!
32854
Fishes, as all other vertebrates, have closed circulatory systems; they have a single blood circuit in which the heart pumps the blood toward the gills where it picks up oxygen, and is then distributed to the body. However, our (human) anatomy is very derived with respect to aquatic pisciform vertebrates. In fishes the circulatory system is very symmetrical and more metameric. The best place to look is the gill area, where the major vessels occur. The heart, which looks like an elongated bulb, is situated ventrally right behind the gill basket. The ventral aorta is the major vessel extending forward below the gills, and emits branches to each functional gill. Once they go through the gill filaments, these vessels reunite dorsally and form the dorsal aorta (paired, then joined). Other vessels are difficult to observe as they usually collapse in dead materials, but if you have fresh large specimens you could try injecting a colored rubber solution (VERY carefully) inside the largest vessel you can find and if the walls are not broken, you will get an internal cast of part of the system. \nAlso look for the dorsal longitudinal vessels that are really close to the vertebrae, passing through the haemal arches.
348268
see this gonna be a little long but u will know it only if u read it, k? \n there are 4 chambers in the human heart. the upper chambers are called atrium n the lower are called ventricles. there is a vertical partition called septum. the blood enters into the right atrium through two tube like veins called inferior n superior venacava. these venacavae carry De-oxygenated blood from the whole body.this blood which is in the atrium then goes to the right ventricle during the contraction of the atrium. at the same time blood enters the left atrium from a tube called pulmonary vein which comes from the lungs carrying oxygenated blood. when the atria contract ,this blood enters the left ventricle. when the ventricles contract the DE-oxygenated blood from the rt ventricle is pumped into pulmonary artery which goes to the lungs for oxygenation; and the oxygenated blood from the left ventricle is pumped throughout the body through the systemic aorta.
215393
the lower chambers of the heart are called ventricles
180955
6 types?\n\ni only know 2 and there are live birth and by laying eggs\n\nyou can find your answer by typing  types of reproduction for fish\n\nif that dosen't work email me \ni am not a fish expert but i have experience with fish reproducing\n\nor you can check the libray for fish books\ntry looking uo for guppies\nthey reproduce really quick
922127
No one is really sure how many there are, because it's hard to take a proper biological census of the critter.\n\nIn 1987, Indonesia banned the collection and export of Nautilus, but many other countries still collect and kill them.  Not too long ago, more than 10,000 were taken from the New Caledonia region, mostly for their ornamental shells.\n\nNautilus have a very slow reproductive rate, taking 5 to 10 years to reach maturity, and only laying about a dozen or so eggs at a time.  No one has ever managed to raise Nautilus in captivity from egg to breeding adult.\n\nAlthough their numbers are low in many regions, the seven or so species of Nautilus are widespread, found in most of the world's oceans.\n\nNo one's really sure if they should protected or not.
670924
Birds have one, snakes have one, and i believe a few of the lizards only have one.
2105
The circulation of blood in fish is simple. The heart only has two chambers, in contrast to our heart, which has four. This is because the fish heart only pumps blood in one direction. The blood enters the heart through a vein and exits through an artery on its way to the gills. In the gills, the blood picks up oxygen from the surrounding water and leaves the gills in arteries, which go to the body. The oxygen is used in the body and goes back to the heart. This is a very simple closed-circle circulatory system.
667467
ANY KIND OF ANIMAL WITH GILLS, SHARKS, FISH, ETC. I GUESS..
403864
The vertebrate cardiovascular system includes a heart, which is a muscular pump that contracts to propel blood out to the body through arteries, and a series of blood vessels. The upper chamber of the heart, the atrium (pl. atria), is where the blood enters the heart. Passing through a valve, blood enters the lower chamber, the ventricle. Contraction of the ventricle forces blood from the heart through an artery. The heart muscle is composed of cardiac muscle cells.
99873
a fish heart has 3 chamber. a human heart has four. they are the same in the fact that they have a "double pump", that is, they blood fish goes to get oxygenated, then come back to the heart, and then goes to the body. unlike a human heart, however, is that a fishes heart does not have a diveded heart like humans do, so they oxygenated blood mixes with the deoxygenated blood, so it is a less efficient sytem.
807915
Most arthropods: insects, lobsters, shrimp, crabs, etc. all have a tubular heart on the dorsal area just under the thorax, cephalothorax. Your vertebrates begin the two chamber linage.