the animal could have a really bad disease and could kill what thing the organ went to.
The theory of using animal organs in human transplants is called Xenotransplantation. (Whereas using human organs in human transplants is called Allotransplantation). Xenotransplants are incredibly rare, since the outcomes are nowhere near as good as allotransplants, and the risks are far greater.
Heart transplants require the patient to take immuno-suppresive medication for the rest of their lives. Plus if the heart is put in place during surgery, but fails to work, you're rather stuck. This is less likely to happen with a mechanical replacement.
Unlike human-to-human transplants, the animals are generally slaughtered specifically to provide the organ.Bovine or porcine heart valves don't usually last as long as a mechanical valve. However, there is the advantage that you don't need to take cumadin (rat poison) for the rest of you life with an animal replacement.
Xenotransplantation can help save lives as there is a shortage of human donors, but is it right to kill the animals for organs?
The disadvantage is that attenuation increases with frequency above 100 kHz in these cables.
Using enough pressure to feel the organs but not tense the animal.
Animal rights groups tend (in some instances, in some people's opinions) to hold views which are sometimes extreme with regards to animal rights. For example, "the life of an ant is just as valid/scared/important as the life of a human". (Some people may argue that this is not true, given than an ant is not sentient.) While this many be appealing in a moral and ethical perspective, sometimes this degree of equality is not practicable in everyday life. The animal rights groups who take this hardline view definitely rule out the use of any animals in medical research, regardless of whether it is of benefit to animal or human. It is because of this that animal rights groups are completely against using animal organs for human transplants.
The advantages with using animal organs for transplants to human's (xenotransplantation) are that humans that are in need of an organ, will not have to wait as long. People who are on the donor list have to wait a long time for the organ they need, as blood type, size and the death of someone willing to donate their organs, need to be beared in mind. Hope this helps
Using animals organs for science is cruel, animal organs are different from human organs and the human body could reject it, some religions (eg: Islam) feel that some animals such as pigs are unclean and having a pig organ could go against their beliefs.. Any of that help? The main issue is that they do not function correctly upon transplantation into humans. This is why the process of xenotransplantation (organs transplanted from animals to humans)is an incredibly rare procedure (especially these days when the risks are well known). The risks of rejection is much higher in xenotransplants, and there is the additional risk of passing on disease from animals to humans. Not to mention the most likely outcome, that the organ does not function correctly. Hence why allotransplants (human to human) are comparatively much safer and are the only type of transplants routinely performed by the medical community.
Animal to human organ transplantation does not work. However if the animals' organs have been genetically altered to be suited to organ transplantation, then it is a realistic alternative to using human organs, which are always in short supply.
The animal you are referring to is the firefly. Fireflies have light-producing organs located on their abdomen and large eyes to help them navigate and communicate with other fireflies using their bioluminescent light.
Generally they're not used, since animal organs are not similar to human organs, so are not suitable for maintaining function within the human body. In very rare circumstances they are used to try and bridge a gap until a human organ becomes available. They are never used as a long term solution (because they do not work long term). Whether they should be used or not is practically irrelevant, since they cannot be used as a long term solution.