For example, we have pressure receptors. We have light receptors. We have thermal receptors and that includes heat and cold receptors. We also have our pain receptors and many other receptors. So what allows me to actually feel it when I pinch my skin is the fact that there is a receptor in that skin that is connected to our nervous system and that allows me to basically sense that pinch, that touch. On top of that, the epidermis contains these specialized cells known as merkel cells that are involved or believed to be involved in sensation.