Why do we have two kidneys? IPhone may know the answer!

May 10, 2019 / BIOON / - most of the animals you see on the ground today, including humans, are the same on both sides We have two eyes, two ears, even two nostrils Scientists gave it a strange name, called "bilateral symmetry" If you look in the mirror and draw an imaginary line in the middle of your reflection, you will see an arm and a leg on each side of you If you put on goggles, you can see the inside of your body, and you can see a kidney and a lung on each side of you But not always Some animals still have only one kidney Photo source: http://cn.bing.com about 500 million years ago, our long-term relatives (some of whom may have only one kidney) decided to leave the ocean and walk to live on land This is a very important time in our history, because on land, animals will change and grow a very complex body with all important organs, including two kidneys Two kidneys are better than one? Now, your kidneys are clearing everything your body doesn't need They do this by "cleaning" your blood When you pee in the toilet, all this waste will be discharged from your body But the kidneys don't just clean the blood They can help your bones stay healthy, tell your body when it needs to make new blood cells, even help you stay upright, and they can help you measure your blood pressure when you walk around all day Photo source: http://cn.bing.com has these important functions Scientists believe that having two kidneys must be very important for our survival It's true that you can live on one kidney when you grow up Some people are born with only one kidney because the other doesn't grow normally In other cases, the two kidneys touch and connect with each other when they grow for the first time, forming a horseshoe shaped kidney People with such kidneys must be very careful because they may be more likely to get sick than people with two kidneys We need extra kidneys and sometimes our kidneys stop working When this happens, our blood can't be washed and we get sick The only way to survive is to connect a large machine, clean your blood, or have a kidney transplant When my kidney stops working normally, I can have a kidney transplant Kidney transplantation involves two people: one is the donor who is going to donate the kidney, the other is the recipient who is going to receive the kidney transplantation After the new kidney is implanted into the receptor, both the donor and the receptor have only one working kidney As long as a kidney, both the donor and the recipient can live a long and happy life They just need extra care They eat well and exercise to keep fit One person in Australia has been using a kidney transplant for 45 years! Photo source: http://cn.bing.com so when all the organs are in the body and working normally, your body works best, but scientists still don't know why we have two kidneys However, I'm glad to know that we have some spare parts that we can not use If you're an adult reading this, it's best to make sure you've registered as an organ donor and chat with your family to let them know you want to donate Maybe one day you can save a life So why do we have two kidneys? IPhone may know the answer!! Reference materials: [1] cultural Kids: why do we have two kids when we can live with only one? [2] Laila moubayidin et al Symmetry matters New physiologist 2015 Doi: https://doi.org/10.1111/nph.13526 [3] amazing facts about snails [4] Hegde s et al Internal agency and unified truth: what are the risks of living with a single kidney? Pediatr Nephrol 2009 Mar;24(3):439-46 doi: 10.1007/s00467-008-0924-9 Epub 2008 Jul 9.  【5】 Springvale’s Twanny Farrugia marks 45 years since receiving kidney transplant 【6】 KidneyTransplant