What major blood vessels must be cut when removing the heart and lungs together during a transplant operation?
A lot need to be cut, but the major ones for the heat are the Aorta, and the Inferior vena cava. the major ones for the lungs are the ones coming off the heart called the pulmonic arteries. These are the main ones.
Can a human get a tail by transplant, surgery, or with any other medical technology?
Didn't Jason Alexander play a character that had a tail? Thinking it was possibly Shallow Hal but maybe I'm wrong. - Anyway, I've seen (on Ripley's Believe It or Not) that some humans are born with a little tail; extending from the spine. - I suppose since people have their shins exended and legs lengthened, have prosthetic horns implanted in their foreheads, have complete gender reassignment surgery (male to female is one thing, but female to male..that's something else). People have tattoos implanted with substances to puff it up, they have cheek implants, chin implants, backside implants, penile implants..breast implants.. I'm fairly sure if you had unlimited resources, and nerves of steel, you would be able to find an obliging Cosmetic Surgeon who would perform the procedure. It would most likely include removing your own cartilage from another area of your body, and implanting it, unless they used a substance similar to what is used for the other more recognized implants. It would have to be a substance that's been tested by the FDA, and deemed safe to be implanted. An actual, long, Leopard/ Lion/ Tiger tail would be not likely. A little stump at the base of your spine, maybe so. - Why don't you just Photo-Shop it in, or wear a Tiger/ Puppy-dog/ Cat/ Lion costume/suit? - Or, pin one on, ala PIN THE TAIL ON THE DONKEY? **IF THIS REPEATS ITSELF, I'M SORRY. IT WON'T STOP DOING THIS.**
How and why do bodies reject organ transplants?
ok, here is a short, non copy-and-paste answer. All of your cells have receptors called MHCs or major histocompatability complexes. The type I MHCs are on all of are cells and allow our body to recognize self vs. foreign. Everyone has different types, and if you transplant an organ, the immune system will not recognize the receptors on that organ and attempt to destroy it as foreign tissue. There are different stages of rejection, the quickest being hyperacute, which the surgeons can physically watch for during the surgery. Delayed types of rejection are monitored by organ function.
Should doctors transplant pigs' organs into human bodies?
If it was legal and proven to work then yes, I would allow it. There's a difference between organs and cells too btw... you should make that differentiation in your argument. Sometimes the organs are used as "placeholders" until a human organ can be located. There's also the element of introducing new diseases to humans from this. Then there's also animal rights and religious beliefs.... Check these out - maybe it will help. I hated debate. Good luck :-) http://www.pbs.org/wgbh/pages/frontline/... http://atheism.about.com/library/FAQs/ph...