Those thin, long cells are taste (bud) cells, and those tiny hairs on the apex of receptor cells are commonly called as microvilli. These microvilli bear taste receptors. These receptors are transmembrane proteins which bind to the molecules and ions that give rise to the five taste sensations.

Well do you get enough? Or need more things to satisfy you better? Take this! 🙂
Click the figure to see it much better (full-size)

Still asking for more? Read THIS. I am sure you will be happy and can sleep soundly afterwards 😆

Happy hibernation, my dear opuntia 😆

Naah, it means that you would leave this forum for several time 🙁 Please stay 😉

Hehe 😀 But I hope your curiosity’s sleep is not so soundly, it can get up anytime and throw questions. After all it can get back to sleep again 😆 You know, we are hungry of questions! 🙂

Ohh 😯

*speechless*