Boffin Daydreamer

This is a question which pops every time when we eat anything spicy. When we eat anything spicy, we immediately feel a burning sensation in our tongue. Tears start pouring out from our eyes if it too spicy. But why? Why is it so? Does our body does not like spicy food? Well, let us understand it with science. There is a family of protein sensors which is present in tongue. It detects hot or cold things. The chemicals present in the spicy food triggers these proteins and they (the proteins) think that the tongue is in fire and send signals to brain. Hence, we think that our tongue is in fire when we eat spicy food. There are a lot protein sensors in our body. They are mainly found in skin and tongue. The sensor which detects temperature is TRP-channel protein. For example - TRP-A1 detects temperature from 10-15 degree Celsius while TRP-V1 sense temperature from 40-45 degree Celsius. Now, 10-15 degree Celsius range is too cold to burn us. So, when TRP-A1 sends signal to the brain, the br